My Mastercard flat out rejects overpayments. This happened to me when the bank I have two of my credit cards through applied the wrong payment to each account, resulting in one underpaid and one overpaid, rather than both paid off.

Let me clarify that. I can pay more than is on the bill if I have charged more since the statement was cut. Calling the 800 number tells me how much debt has been charged on the card to date. I can submit that amount, even if it is more than what is listed on my payoff bill.

IP