Horrible Experience with Audi Centre Sandton

Had a horrible experience with Audi Sandton Pre owned. Not only did they sell me a car that had been involved in an avvident before (and not mention this to me), they also sold me a car with missing parts. When I realised this after I sent back my car for inspection, the Pre owned manager said he will investigate and get back to me. They since ignoring my emails and no effort to resolve this error on their side. I doubt I will ever do any business with Audi anymore. Horrible and costly experience with Audi Sandton.