Trying to find the corporate complaint department-major billing errors to the tune of several hundred dollars

I closed all my services EXCEPT internet on 5/29/25. On that same day, I called and reduced to internet only AND took all cable-tv equipment immediately to the local Xfinity store to turn back in. And there the problems started.

My reduced rate for internet only was supposed to be $103 (apparently there was an additional subscription that I was not aware of but am willing to leave alone). My next bill on 6/17/25 debited for $222.85 (according to the bill, for cable AND internet rather than internet only). I called, was told that it would be refunded. No joy. Then in July, I was alternately harassed and billed for several payments. On 7/11/25 I paid $78, then on 7/14/25 I was harassed for $131.80 (which was subsequently refunded to me on 7/26/25), then on 7/26/25 I was again harassed for $131.80 (again refunded to me on 8/3/25), then I paid $269.70 on 8/6/25 and called to straighten it out again on 8/6/25 during which I demonstrated to the person who FINALLY assisted me rather than passing me on down a chain of people and promised me a refund that I was overpaid by several hundred dollars, and was again harassed today when I called in because I was told I again owed $265.98. Now, apparently when I instructed my credit union that ACH payments over $103 were to be denied because Xfinity was routinely overcharging me, Xfinity continued to try to withdraw more funds than they were authorized for (the original over-$200 payments). And I was given the HUGE present of being charged as "returned fees" because I refused to allow myself to be robbed, which is why I have continued to go in and pay manually. BUT it STILL PERSISTS! Xfinity, according to my math, is now holding approximately $407 in overpayment by me. And the "billing representative" and the "manager" that I tried to discuss this with claimed the overage was NOT an overage and blamed it on (variously) returned fees, underpayment, late fees, and back due bills. However, I've examined all my conversations through the online chat, all my bills with Xfinity this calendar year so far, and all my payments this year so far (including the refunds), and determined several things:

Firstly, that Xfinity DOES owe me that amount. Your own records prove it.

Secondly, that Xfinity has not only not fixed this problem, but continues this problem to this date.

Thirdly, that this is NOT good business practice, much less good customer service. When your employees' response to legitimate questions, requests for explanations, and resolution of a problem is to blame it on the customer even in face of evidence that Xfinity's practices are at fault, there's a problem. And sending said customer on numerous rounds of "transfers" with meaningless platitudes of "We completely understand and swear we're going to fix this for you" is not acceptable. Today's interaction by phone was just the icing on the cake. I was dismissed, gaslit, outright lied to, and otherwise pushed to the point of exhaustion over this. And never once given any information as to who I could speak to in order to legitimately get this resolved.

Bear in mind: I want to keep my internet. I'm NOT trying to close down my service, other than the television services. But I cannot sanction continuously being overcharged and given the runaround and other ill treatment I've received.

So there you have it. That's my issue. I didn't want to post it in a public forum, but guess what? You don't seem to have any real complaint/dispute contacts either!!! Why am I not surprised? I will wait to see if Xfinity will contact me to resolve this mess, but don't worry. I'm going to add this attempt to my list, along with the record of the nearly hour long useless call today, to the already extensive records of chats attempting to fix this. I'm sure there are other places I can post this complaint. Maybe one of them will get me a response.