quantumfiber.com Reviews 1,043

Update - 6 Mar 26 - Our Gig fiber Internet suddenly slowed to dial up speeds - absolutely horrific. Called to report it and they said the first available repair appointment was a week away. That meant it has been basically useless to us for almost a week..... our college age daughter has had to go to an internet cafe and pay for internet to do her homework and papers. I asked about a reduction in my bill for the month and was told they would consider it but it was not a given. I will dump Century Link when Google Fiber is in our neighborhood - they just started laying their fiber now....... I have shared our experience with our friends and family that are getting Century Link in their neighborhood to avoid at all cost...........

Update - with a relative that has dealt with this we ditched the Century Link Router and used the tp-link AX3000 Whole Home Mesh Wi-Fi 6 System. Now we are getting great speeds throughout the house and backyard. Sucks that I had to spend $150 out of pocket and take the time to set it up to get it to run as it should have from the beginning. Now my typical speeds are what I expected - 380 Mbps upload and 480-600+ Mbps download.

Impossible to cancel. They have no email for customer support. Only a live chat on the website or a phone number that I cant reach

I have had these clowns for 1 month, have had to call three times to try to get the non English speaking nitwit to get my payment correct. They suck, worst company I have ever dealt with bar none.

Quantum Fiber continued billing me for two months after my service was canceled and my equipment was returned. This happened during the CenturyLink-to–Quantum Fiber transition, and Quantum Fiber has confirmed both the cancellation and the returned equipment.

Despite this, they charged me for service I did not use. I only discovered the issue after seeing two months of bills. Since then, I have contacted customer support multiple times and had several tickets created, all without resolution.

Quantum Fiber is now refusing to refund the charges, even though their own records show the service was canceled. This is not a misunderstanding — it’s a billing failure followed by an unwillingness to correct it.

Being charged for canceled service and then ignored after repeated attempts to fix it is unacceptable. Based on this experience, I would not recommend Quantum Fiber.

I am extremely disappointed with the experience I have had with Quantum Fiber.

A week ago, a sales representative came to my home and assured me that fiber service in my area was fully installed and ready to be activated if I chose to move forward. Based on that information, I scheduled an installation appointment and waited several days for the scheduled date.

When the technician arrived to complete the installation, I was informed that the fiber infrastructure had not yet been installed, making it impossible to proceed with the service. This directly contradicts what your sales agent communicated to me.

After the failed installation, I was told that someone would contact me to schedule a new appointment once the fiber work was completed. Since I had not received any follow-up, I contacted Quantum Fiber myself to request an update. I was informed that additional work still needs to be completed before installation can take place, and that the installation would be scheduled afterward. However, no date or time frame could be provided.

Additionally, it was not taken into consideration that I had to lose work hours in order to be present for the scheduled appointment, only for the installation not to be completed. The lack of coordination, transparency, and communication has been extremely frustrating and unprofessional. This experience has already caused significant disappointment and inconvenience and is not what I expected from this company.

We were excited to switch away from Xfinity for internet. They installed, and we setup service immediately. We had autopay in place and all the things set. Then after the first month we got notified we didn’t officially make a payment. So we made the payment and setup auto pay again….. we just got an email yet again that we have an outstanding bill and will lose our service in a day or 2 if we don’t pay. No weekend customer service or support. The internet is fine, it’s internet, but having setup autopay over and over we weren’t going to do a 3rd time. We’re cancelling and straight back to xfinity, it’s cheaper with a 5 year price locked in, no problem. Happily leaving the atrocious logistics and billing at quantum fiber. Maybe in 5 or 10 years they’ll have the infrastructure for standard accounting practices, but till then…. Far from trustworthy.

Update - during our cancellation call we were told “it happens that new customers accounts randomly disappear”

Have only had problems with our WiFi. We pay $80 for 1 gig just to have bad WiFi and lag.

Had their service for about a year… for the first 3 months couldn’t get consistent service and struggled to get them to come out and fix it also struggled with their customer service to get that situation fixed. Finally when it worked it worked well but I moved and when I called to see about how that would work I get this “we don’t offer service transfers anymore” which is unfortunate cause now as I’m freshly moved I have no internet at home and am having to look for a new provider and based off previous experiences I have no urge to go back to them

Called yesterday to let them now I was having trouble with my internet. Tech support did a reset and said if I had a problem to call back. Just tried to get on our tvs and there is no internet connection. After business hours so said to go to web page. Web page is te biggest waste if time I've ever had on one. Trying to find who people recommend for service because all other internet providers I've had has 24 hour service available to help.

I recommend that you don't use this service. You will notice that don't even have a 2 star rating.

I have to be fair here.

The actual service from QuantumFiber was excellent. Speeds were consistent, uptime was solid, and I never had issues with performance. From a pure technical standpoint, they delivered exactly what they promised.

Where things fell apart for me was the pricing model.

I was paying $80 per month for 1GB service, only to find out new customers are being offered the same service for $45 per month. Naturally, I asked if I could move to the current advertised rate. The answer was no. I was told my price was locked in, but I could receive a one-time $25 courtesy credit.

I appreciate the gesture, but a single month credit does not solve a long-term pricing gap. Loyalty should count for something. Instead, the structure rewards new signups and penalizes existing customers.

Because of that, I ended up switching providers and now have 3GB speeds for nearly the same price.

Again, the service itself was great. But long term success requires taking care of the customers who are already with you, not just the ones you are trying to acquire.

It is what it is.

The company is absolutely garbage.
They can't run cards and has to be done be the website. Website says I'm up to date. Haven't been charged in 2 months when I call customer service says I'm one month behind. Finical side says nothing to worry about we will fix it when we can. No solutions no help. Just awful

We just started service with them 1/9/26 and so far so good! We had Cox before them and were paying $160 a month just for internet. For the same unlimited internet with Quantum is $65. We didn't have any problems with installation. The guy who installed it was a subcontracter and said Quantum wasn't available for him yet but as soon as it was he was going to get it. If things change I'll update my review but for now we're very satisfied.

Terrible. Installed and stopped working on the same day. Now I have to wait for two days before I can get my internet back. Customer service team is given no ability to remedy the situation at all.

I would give Quantum zero stars if I could. My internet was down for TWO full days, and I work from home. Because of their outage, I was completely unable to work. No internet means no income — it’s that simple.

The most frustrating part? I was still paying for a service that wasn’t even working. There was no urgency, no reliable solution, and no real concern for the fact that their outage directly impacted my livelihood.

In today’s world, internet service isn’t a luxury — it’s essential. If a company can’t provide reliable service, especially for customers who depend on it professionally, they shouldn’t be in business.

I ended up canceling because I can’t afford to gamble with my job. I absolutely do NOT recommend Quantum to anyone who relies on stable internet, especially if you work from home. Save yourself the stress and look elsewhere.

Door to door sales guy rings my doorbell twice with a no soliciting sign. I confronted him and he couldn't care less. He also didn't have a peddler's permit required by the city. He didn't have a card and didn't want me to copy down his info. Stay away from these people. SCUM

If I could give 0 stars I would!!! Stay away at any cost. Had to reset my modem at least 10 times a week called made an appointment for a tech. Came 2 hours early we were not home asked him to come back at scheduled time, instead he checked the outside, never got in to check the equipment and left putting in his notes that the job was complete. Called him back and he refused to come back. I guess the customer doesn't come first at Quantum. Just a horrible experience, Xfinity here I come!!!

I switch from Xfinity to Quantum and I couldn't be more happier. The internet is fast than I ever had with Xfinity and the support is fast too.

They provide a truly 1Gbps connection Down/UP and cheaper than Xfinity

If I had one word to describe Quantum Fiber, it would be incompetent.

I went into this knowing their customer service reviews were poor, but I was willing to tolerate that if it meant reliable, fast internet. Unfortunately, from the very first interaction, this experience was a complete failure.

During my initial call, I clearly agreed to an installation appointment on February 14th, during the 8–10 a.m. window, specifically to avoid taking time off work. The representative and I discussed February 9th as the earliest available date, but the only window that day was 2–5 p.m., which I declined. We agreed on February 14th.

After the call ended, I discovered I had been scheduled for February 9th anyway.

I rearranged my schedule, left work three hours early (losing pay), and stayed home for the appointment. At 4:30 p.m., I received the following text from Quantum Fiber:

“Quantum Fiber: We apologize, our technician is running late for your appointment. We’ll update you once they’re on the way…”

Based on this message, I reasonably believed the technician was still expected that day.

At 5:10 p.m., I called Quantum Fiber to get an update and was told — shockingly — that my appointment was actually scheduled for February 17th. This was after multiple emails and text reminders confirming the February 9th appointment.

When I questioned this, there was no accountability. I spent nearly 50 minutes on the phone attempting to reach a supervisor. I was repeatedly told none were available and that someone would call me back “in an hour or two.” I explained this was unacceptable, agreed to hold for five more minutes, and waited an additional 15 minutes before disconnecting.

To make matters worse, Quantum Fiber had already withdrawn money from my bank account despite no service being provided and no installation occurring. I ultimately had to dispute the charge with my bank.

A supervisor attempted to call me back approximately 45 minutes later, but by that point the damage was done.

In total, I lost five hours of my time, lost wages, and received zero resolution.

This was one of the most disorganized, frustrating customer service experiences I’ve had with any utility provider. If you value your time and expect basic competence in scheduling and billing, proceed with caution.

When installed they were to order a booster, it was to come within a week. Three weeks later and 4 phone calls and still no booster. They cut my sprinkler line when burying the cable. It was reported immediately and still no fix.

I have had quantum for internet service for 3 weeks and the first week I was out of service for 3 days but a technician came out and got us running after 2 hours the service was out again on Tuesday of the third week and stayed out for the whole week on Wednesday of the third week they said no service till Friday then it was 1:00 pm Saturday then they texted out until 10:45 pm then Saturday afternoon told us Sunday night then no service at all till Monday this is Super Bowl weekend how fun is that so Monday morning we are switching to a new provider and contesting the months bill.