Don' trust Ford Fury Fourways

I bought a car that was used as their test drive car. It's been in the workshop more in the first couple of weeks than my old car which was 10 years. They had to replace the dashboard as it was not fitted correctly, while driving the battery light and oil light comes on. They had to disconnect the battery for it to re-program the system. Petrol gauge goes from full to two quarters and then full and then half and then full again while driving. Hand break had to be tightened, break blocks had to be replaced and the car is going back in because it is still pulling to the side while driving - wheel alignment is out but dealer insists that it's a new vehicle. They said these vehicles (EcoSport) are very hard to source - takes 4 to 12 weeks - yet I signed the contract on the 24th and the car was ready for collection same day?????? The car given to me is not new. They have to date not gotten back to me to proof that it is a new ordered vehicle. I am convinced that the vehicle is NOT NEW. They could not even bother to have put a ribbon or give me a welcome pack on collection. The sales lady also did not even bother with the sales process.