Pathetic Service From BMW Zambezi

My BMW was booked for a service. A week later I had to replace the battery because all of a sudden the battery is faulty. The handbrake was not adjusted and is worse than it was before the service. A month after the service I look under the hood to wipe the dust and notice that the alternator belt was totally damaged and the tension pulley worn because of the belt. Oil evidence around the throttle body and a new crack in my radiator backup tank. I confronted the service manager and the sales man and was shocked of what they said. " we only check on what was quoted". If I send my car for a service I expect the car to last at least until the next service. They could not even reset my service counter. Really!!!