About 3 years back, I had no choice but to get my wife a new car. To make this as short as I can. I been doubling up on the payments every chance I get. I came in to a few dollars so I thought to pay the car off early. I added up all off the payment slips that were left in the book and mailed in that amount. Now to me that should be payed in full. The finice company says that is not the case. that I have to send in a payment with each slip. Now at this time they say I do not have to make a payment for another 7 months. yet there are only 5 payment slips left. can you help me to understand this.