Business ProfileforEnterprise BMW-Mercedes Benz-Sprinter

I had a problem with my car and it would not start, I was connected with a tow truck through USAA Auto, and I requested that the car be taken to Bergstrom Mercedes Benz. The following morning, I contacted the dealership and talked with the service consultant *************************** (****). I informed him that I my car would not start and that I had purchased parts from the dealership previously in an attempt to get the check engine light out, so that he was aware what had been replaced in an attempt to assist with troubleshooting. I had been contacted by the consultant and informed that the car was running and that the spark plugs needed to be replaced, which accounts for 90% of my problem. Quoted cost for the replacement of the spark plugs, $500.00 for plugs and installation. I declined and informed the consultant that I would purchase the plugs and replace them myself. Meanwhile a vacuum hose was ordered and enroute, other than that the car was ready to be picked up. So after the service department replaced the hose, I was informed that the car had been test driven and was ready for pickup. Nevertheless prior to me receiving car I was then informed the car is blowing smoke, in which I stated that my car was not prior to the delivery nor was I informed after the test drive that day, but the morning of the pickup. The dealership replaced one three inch elbow hose, that I requested be replaced. A Cam Shaft Magnetic Sensor, in which I informed ****** that I had just recently purchased from them, so there should not be an issue there, but if it needs to be replaced to resolve my problem, so be it. I picked up my car and while driving, my check oil light came on, that should not happen if an all point inspection had been properly completed and the car should have not be returned without properly topping off all fluids. The next day I went out to start my car and it will not, to date the the car is not operational. The amount paid in total $954.61 for an incomplete job.