This kind of thing is actually a scam to trick you into buying a car. You can check your contract. All contracts are unilateral, and there is no cross contract. In other words, you buy a car as a contract to buy a car, and advertising is a contract to advertise. Then there is no connection between the two, and you can check in. No matter what problems the other party has, or what problems you have here, it is ultimately irresponsible. If they tear up the contract, then you have to change the rest of the car loan. If it is not returned, the ownership of the car does not necessarily belong to anyone, but they can make money by cars, loans or advertisements that do not necessarily exist. The end result is that you buy a car in full. The lender successfully lent you the car, and the 4s shop sold it, and they got money from it. As for advertisements, you can check them in detail. If they don't advertise, there is no way to deal with the rest of the advertising expenses. Even if they don't pay advertising fees and stop advertising, you have no reason to ask them to pay. Finally, the contract is invalid, and you can pay the rest of the loan yourself. Turn into a high loan to buy a car.