Frustrated I can not cancel service for my CLOSED business.

Hello. I am a Comcast Business customer and have been for many years. I have had some REAL trouble getting help resolving my issues involving my account. Each and every time I try to get help to cancel my service I have a Rep from the retention department trying to sell me something or not actually canceling my service. I had a Thai restaurant that had to unexpectedly close because the roof collapsed at a business that shares the building. So the city required the building owner that he was required to close the entire building until the roof was replaced. The landlord initially said this would take just a few months. That was all the way back in August 2024. I was afraid to lose my number so I asked for the minimum service to keep my phone number. This price came out to just over $61 a month just to keep one phone line while waiting to reopen. I cut out my internet and everything else that I didn’t need because I simply was not using ANY service. After delay after delay and the unexpected expense of reopening the restaurant compelled me to decide to just close for good. But my issues with Comast Business is that I would be told that I was given an introductory price and would keep extending this so called intro price of $61. I would see my bill just shoot up and then I would have to call over and over again to try to get some relief .Each time a rep said that an adjustment would show up in a few days but that never happened. In June I decided that reopening the restaurant was not an expense I could afford, especially being almost 72 years old. Now my Comcast bill is $389.13 for service that I have not used at all since August 2024. I have called over and over and get a person that tries to sell me and gives me the run around and I STILL see that my service is still connected. I have told the same story letting them know that I will be permanently be closing. Much to my amazement more than one rep would work hard selling my to stay instead of helping me. Finally had a rep send me an email so I can sign the cancellation paperwork. But even that was hard because the rep would tell me over and over that there would be a “termination fee”. I know that this is a long winded complaint but this is almost a years worth of frustration getting help. I had too Google how to get in touch with a Manager and this is the only way I know how to get someone to HELP me. My next step is contacting the Executive offices and then the CEO for help if need be. I have not made any income this year but my Comcast Business bill just keeps growing! I don’t know how I am going to pay and I have excellent credit that I do not want to be ruined for not paying. Please someone help me! I beg you!