Unresolved Billing Issue 38 days and counting. Please help!

<span;>Comcast has repeatedly lied about a bill credit and I will be past due in 1 day. What do I do?

<span;>Backstory:
<span;>I live in a 3 unit apartment complex and have had Comcast internet for 3 years without a single issue. About 2-3 months ago, a new tenant moved into apt 2 and had Comcast internet installed. I had no immediate issue. Then my internet goes out one day. During the install of apt 2, the technician left about 20ft of coax laying across the floor of a shared utility room which serves as laundry and storage for the tenants of the unit instead of securingit along walls etc. Someone tripped on the coax and disconnected my service (yanked it right out of the wall outlet that enters my unit. So I called for them to fix it...

<span;>9/5 Scheduled a dispatch
<span;>9/6 Received notification that case was closed after they rolled a truck to check for downed lines on the pole outside
<span;>9/6 Called to schedule another dispatch. They were trying to bill me $100 up front which I refused. I escalated and spoke with a supervisor who stated they placed a $100 bill credit on my account to offset the charge. The supervisor actually called 5 hours later to inform me the adjustment had posted to my account (Yay, problem solved, right?)
<span;>9/9 Tech John came and fixed everything. Clean install, great guy, gave him a good survey.
<span;>9/25 noticed my bill was still $100 higher than normal. Tried to chat but kept getting disconnected so I called. Talked to agent who said supervisor never applied adjustment then created an ECM case to fix and gave me case # stating the fix would be balance impacting in 24-48hrs
<span;>9/29 I canceled my auto pay when the $100 charge is still on my account. I call back and the agent confirmed the ECM case fixed my issue and gave me a reference and transaction ID for the $100 credit. She informed me to pay my bill less the $100 and it would all work itself out.
<span;>10/2 I pay my bill manually less the $100 as instructed 13 days earlier.
<span;>10/14 My bill is due on 10/15 and I still show a $100 balance. I have 0 faith I don't go past due tomorrow or next day so yet another call to Comcast is coming. All in I've spent 6+ hours on the phone with them. At this point I've probably cost them well over $100 in costs from my calls and chats yet my issue goes unresolved.

<span;>Comcast please help me! You don't want to talk to me and I don't want to talk to you. Let's go back to auto pay and no contact for another 3 years. Help resolve my issue!