Car-Mart

I paid a mechanic and paid for a part that was covered in the service contract 5 days after I put a down payment on a car. Was told my monthly payment was 500 250 every 2 weeks. Payments wasn't set to my pay period. Went to the office to change payment amount and told them the day I could pay and they put down what they wanted too and 1 week later received a car saying I missed payment I said I told u the day I could make the payment how could I missed the payment.. They didn't change anything said they noticed the account when that payment was going to get paid. The car value is 1600 and I was 13000 for the car and the car has over 5 recalls