Horrible service at BMW SERVICE CENTERS

I took my car to BMW Emalahleni sometime in February 2022 for a drive train problem, up to date they failed to resolve the issue. The car will get stuck in the middle of traffic leaving be traumatized as I felt unsafe, this happened 4 times after they claimed to have fixed it. I reported the matter to BMW South Africa and I still found no joy as the car is now at Menlyn after it got stuck in Rivonia road; I was met by an aloof lady at Menlyn who made demands and which I met and she later shifted goal posts. I had to make an expensive purchase as my car was with BMW witbank for almost 4 months and it now stuck at Menlyn