Maybe the worst customer experience I've ever experienced with any internet provider

No, actually the worst customer service. 

I contacted customer service to renew my internet contract via chat (after at least 3 failed attempts of getting someone who would be able to help me over the phone).

I saved my conversations with the "live agent" via screenshot and copy & pasting. I'd attached the photos here but I can't, so here's the summary: I was quoted $65/month for 800 mps for 12 months. I even had the agent repeat to me multiple times that I would get quoted "$65/month for 800 mps for 12 months," despite the phone agent saying something different. Good ending, right?

No. Rather than getting me the deal he approved for me, the agent created a second account with a second account number for me (why the hell that happened beats me). I then had to ask the agent multiple times to delete that created account.

Did they delete the account? No.

Am I paying the quoted $65? Hell no. I'm paying $85.

I went to an Xfinity store who couldn't help me. I called to ask if I could AT LEAST get access to Philadelphia Sports network because I am paying more for less (I lost access to Philadelphia sports after renewing the account). One the phone, I was told that I'd get a call back when they fixed the problem.

that was back in Spring/Summer 2023. Here I am now, waiting to be serviced. Lost $200 and lost access to my favorite channel... just for being a loyal customer.

Unless you have stories with happier endings, only use Xfinity if no other alternative is available. Once I'm out of here, I'm saying GOOD BYE to Xfinity unless I get my $200 back and access to the sports channel.