Repaired 4 times in 3 weeks on a brand new car

Since i've had this vehicle, i've been having problems with it. I bought a new car from this branch (volkswagen witbank) and since i've had it, it's been giving problems. I heard a banging noise every time I hit a piece of bumpy road so I took it back and they checked for me. They said they found the problem with a leaking right hand caliper. It was \fixed". I got the vehicle back and no joy still the same problem. Then they said it was left hand wheel bearing an hub problems. It was \""fixed\"". Got the car back no joy. Then they kept the car so that they could repair top shock mountings. Today I got feedback that the problem still isn't solved and that they are replacing right wheel bearing and hub as well. So when is enough enough? This car is brand new. Have had problems since 400kilos now its ons 1500 kilos and stil being repaired?"""