Disgusting after sales service

I bought a car from Imperial boksburg on the 5th March 2015, i had the car 2 weeks and the clutch kept sticking causing me to skid all over the place, took the car back they had the car a week as they did not know what was wrong, first it was the clutch then the gear box. the attitude i got was disgusting, then i was doing my insurance and they needed the VIN number of the car and i noticed that the VIN number on the contract does not match that of the car, and i told them this is going to cause problem and basically means my contract is noil in void. the VIN number is the ID of your car. im basically paying for a car i don't have. i took the car to get its 120 000 service this morning only to find out that due to the vin number not matching its causing issue as the service plan states that the plan was terminated. i called graham to assist and he was extremely rude to the lady at renault, and his attitude was im not at work im at home so what do you want me to do about it.call michelle at 8 to sort it out. he sold me the car thats the kind of service that imperial wish to offer clients that buy cars from them.