Billing Issues

I have been dealing with this issue since last year regarding my bill when I signed up for my account which was last year I have repeatedly been over charged I talked to CS time after time with out a credit to my bill my should be $71.05 each month $100 + dollars nor $200+ dollars today my service was disconnected I was told for nonpayment my bill should have been credited CS representative won’t listen just over talk you can SOMEONE PLEASE REACH OUT WITH A RESOLUTION IT ALSO SEEMS LIKE I’M NOT THE ONLY ONE HAVING THIS PROBLEM WITH XFINITY