Pathetic and Disgusting service from Autohaus Centurion - Selling defective cars

I bought the car from Vw Autohaus Centurion! The service I received is Pathetic and disgusting! They sold me a defective Car, a car that was in an accident and that was never disclosed to me! A car that I bought started giving problems from day 1 up until today. Last week I was driving on the highway going to Menlyn when one side of the bumper fell off, I had to pull the car aside and sick for Help! Only to find out there was pieces of woods used on the car to hold the bumper - The would they used its now Rotten that's why my bumper is falling off. Ever since I bought this car I don't know what peace is! It's problems after Problems. They refusing to take thier **** Car back, That's not the only issues, the car had a gear box problem after few weeks I bought it, the gear Box was cracked, It also had a very Bad Sound and the paint on the car had bubbles, most parts on the car are damaged. I wouldn't advise anyone or refer anyone to buy a car from Autohaus Centurion!