From very good to very bad service

car was in on Friday for a service ( cost close to R7000.) on the Monday my my car had a oil leak they fixed it the Tuesday on the Thursday brakes wear metal on metal ( with no warning light coming on ). Now BMW Centurion is the only ones that I take my car to. When I took my car in Phillip said sorry for the inconvenience they would give discount when they change the pads and disc's . Well if the metal on metal did not take place the the disc's would not need to be replaced! One can only start to think if the brake sensors not working and with brakes worn out when the car was in for its service , was it a mistake or over looked. But why should the customer pay for the service suppliers wrongs ??? To day it was said they could help me first thing and work on my car . But was told there are other car in front of me. After a fight and telling them to give me my car back and that I would take this to BMW SA they took my car in to start work on it. Why must on fight for good service ? Well it's see what the bill will be now !