At Wits End With Billing Issues

Hello, I have been dealing with nothing but billing issues since last month in October and I can't handle it anymore. In the last week I've made probably 20+ attempts at setting up payment arrangements that my account were allegedly eligible for, per 15+ different agents saying was eligible. The chat app wouldn't give me an option, but the website said I was eligible. I attempted to set them up with various agents, and was ASSURED every time that they'd reflect on the account. This was not the case. They never registered as an arrangement in the system and my services continue to show a shutoff date for the 24th. 

As of today 11/23, I scheduled an installment plan through the Xfinity assistant app for $50, but it is still not reflecting the installment agreement and that my services will still be disconnected on the 25th. I called an agent to see if I could get help on the phone and was brushed aside, told my services will be disconnected regardless unless I pay the remaining past due $90 because the plan don't go into effect until last month. I immediately reached out through the Xfinity app agents and was told that it would go into effect within 24 hours and that my services WILL NOT be disconnected. I have an email confirming it will process in 1-3 days, but my services are scheduled for disconnection by then. 

I DO NOT know what to believe anymore, as for the last week I keep getting nothing but contradictory information regarding every advance for help paying my past balance. I am beyond stressed right now and I do not really have the extra $90 to pay right now due to health concerns, and this is causing me nothing but issues. I've never had issues setting up a simple payment arrangement, getting the confirmation email/text, and notification on my account portal, but nothing seems to be going this way. I am ready to just disconnect my service altogether and move on if this can't be fixed. I have never had such a frustrating experience with Comcast but this is too much for me. For the record, I have chat transcripts or screenshots for every conversation I've had across the app, Reddit, and here. Who do I need to speak to in order to get a proper fix for this?