BMW 320i transmission failed at Service centre

Service n maintenance is very high Charges for the spares are very abnormal Charges for labour are more than the spares feeling like being cheated every time the car goes for repairs. Same problems persist after paying for spares and high job work labour to the showroom. And the car is kept with them for 2month saying waiting for spares If spares are not available in the service centre y are they keeping a service centre here. Regreting that I brought a BMW