Horrible after sales service, my cousin bought a car from the and they were really nice and helpful

Horrible after sales service, my cousin bought a car from the and they were really nice and helpful. After buying the car she could not use car track even though she already paid for it at the dealer. The dealer sent her to car track and car track sent her back to the dealer it's whole back forth. The sales lady is not assisting the management of the dealer are saying there is nothing they can do. This has become really frustrating because she paid for this service and cannot track her car. If they are nice to you now just now that they will treat you horribly after you have signed and collected the car. Po Non existent after sales service