Why won't auto pay let me pay an additional amount outside of my monthly payment without including it in my monthly payment. It use to let me do this, this is how i avoid interest it used to work now it doesn't. To put in an example. My note is 205. I noticed my special financing ends in three month my auto pay would be set up to do 100 each month but clearly I would be short five dollars so to beat this. I put an additional five dollars randomly in the timeframe of three months when the auto pay goes through on the date set it only contributes 95 because it's seen I put five dollars in somewhere in the same months time frame, this is not what I want. I want to pay an additional five dollars to the balance not my auto payment.