Ridiculous

I signed a new contract with Comcast Business on May 25 to reduce my monthly rate to $329.32 due to rising costs, and shortly after, a technician came out and installed the new modem as part of the updated service. Despite multiple follow-up calls—on June 16, July 1, and July 22—my account still reflects the old rate of $477.00. Each time I called, I was told everything was all set, taken care of, and there were no issues—that I didn’t need to worry or call back. Yet nothing has been resolved. I was even told another technician needed to visit (despite one already coming in June), and when the second tech arrived, he confirmed there was nothing left to do. I was just billed $477.00 again on August 12. This is unacceptable. I am requesting an immediate credit for the overcharges, confirmation that my contracted rate of $329.32 is applied, and assurance that my account reflects the correct plan. I can't call another agent. Every time I do they state it is all set and it NEVER IS