If you decide to pay the remaining balance in full on your due date or before, somehow you still have another payment of a dollar or, so even after you paid what they stated, was the full remaining balance. Fyi to developer response, I contacted your team, and they were useless thinking I made the mistake... Your system has a flaw where is charging customers extra money a month after... when I pay my amounts in full I select pay in full. I don't enter the amount manually.