Bosch car dealership Carnival

They dont even deserve a 1 star. It is the worst place you can ever take your car. I took my bmw 4 series for a service and for oil leak. They confirmed oil is leaking from the tapped cover casket. Which they charged me R3500 to replace. I paid and the next day the oil leak was worse, I returned to them and the said is just oil leaking from a bolt they have closed it. The leak became even worse. I went in for the third time and was told is just excess oil from the repair it wont happen again. I took a trip out of town my car was smoking from the engine all the way to my destination. All to find nothing was replaced, they just put a lot of silicone to close the leak. Silicone on a big engine like that. All i want is my money back. I dont want them to ever touch my car. I will never return to this dealership every again