In XXXX 2015 I sent {$1500.00} along with my regular car payment of {$300.00} for XXXX, 2015 to my car loan company ( Mark One Financial ). Along with the {$1500.00} check, I wrote a letter stating that the {$1500.00} was to go toward my principle. I had also written that in the memo of the check. Today I get a statement stating that my next payment is due XXXX 2015 and my payment only {$31.00}. I called Mark One Financial and spoke with XXXX, who would not give a last name. I asked her why my {$1500.00} had not gone to my principle. She stated that all payments would pay the interest XXXX. I told her it was not a regular payment and that I had sent a letter with that check stating that it was to go toward my principle. She then stated that their system did not work like that. I became upset so she put me through to her manager XXXX XXXX, who has no XXXX name, she stated the same thing. She brought up the contract, so I asked her where in my contract does it state that. She said she did n't know she would have to look at it. She then asked me if I was going to get upset over {$17.00}? Now I 'm furious, no where in my contract does it state that any principle or prepayment would go to pay interest XXXX I then told her that I would be filing a complaint, to which she stated she would be contacting her attorney. I told her good and hung up. 
