Final Bill

I moved from Pennsylvania to Maine one year ago.  I do not live in an Xfinity area, so had to cancel Internet/Cable.  Xfinity could not / would not change the address on my Mobile account because I no longer had Internet/Cable.  Because I had been swindled into two-year watch contracts in 2024, I had to keep my Mobile account until the watches were paid off.  Once we were free of those contracts, I moved our service to another carrier and received an e-mail with a link to the final bill.  Unfortunately, that link does not work.  I cannot see my final bill.  After 2+ hours online and on the telephone with offshore agents, the answer seems to be that I cannot see the bill because my service is disconnected.  One agent offered to mail the bill to my Pennsylvania address, but mail forwarding has already expired.  I asked to speak to a supervisor; the final agent would not forward me.  I asked that agent to remove my credit card from my account; she claims she was unable to do that.  I cannot remove it because, again, my service is disconnected.