dont let them get you here is what you can do. when you drove off the lot they gave you a set price of how much the car payment would be each month. once that contract is signed it nust be honored by you and the dealership they cant con anym more money out of you. you either tell them that is how it is or you can contact the better business bureau on them or you can give them the car back and get any money or car you gave them. but like i said once that contract is signed its a done deal for them. watch your statements and payments and make sure they arent adding in any more money without your consent.