Unable to cancel my service despite multiple attempts to cancel

I am extremely frustrated and this needs to be resolved immediately. I called and canceled my Xfinity service on 6/29/26, and the representative I spoke with CONFIRMED the cancellation at that time. I had no service after that date. Despite this, I have now been billed for two months of service I did not use and did not authorize.

This is unacceptable. I have already tried multiple times to resolve this and confirm my cancellation, and I am still being charged. I should not be paying for service that was cancelled and confirmed as cancelled by your own representative.
I am demanding the following:
 1. Immediate confirmation in writing that my account was cancelled effective 6/29/26.
 2. A full refund or credit for all charges billed after that date.
 3. Written confirmation that no further charges will be applied to my account or sent to collections.
I have been more than patient trying to get this fixed through normal channels. If this is not resolved promptly, I will be filing complaints with the Better Business Bureau and the FCC, and disputing these charges directly with my bank/credit card company.