PaymentOne Corp. has continued charging my at&t telephone account for a service that was cancelled over a month prior. Paymentone corp charges at the beginning of the month for services yet to be recieved. This "allows" them to post charges to your phone service after having cancelled your contract with them. I my case, I had cancelled service on 16th on january. The billing cycle for Paymentone does not end until the 17th of each month. However, paymentone corp did not post the cancellation to my account until a day later--so they... read full review »