It sounds like you may have a legal case against them if they don't pay you. Let them know that and I imagine they will try a lot harder to reimburse you. Get everything you can in writing or record conversations just to protect your case. If they know your intentions from the beginning, it should be easier to get them to pay you what they owe when it is time. From my understanding, if you take it to court, and if the dealer loses the case against them, they will owe you more than the bill if you notified them about possibly taking them to court and they still failed to pay. There is an interest rate of sorts for money owed when you take steps like that. You should do some research and plan ahead to get as much money out of them as you can. Don't go down without a fight and good luck with everything!