I had a terrible experience at german car speciali...

I had a terrible experience at german car specialist. They had my car for two weeks to change a tail light, my windshield wiper motor, and my drivers side window wouldn't roll down all the way. They said I needed a new batterie so I put one in two days later the batterie was dead, and a check engine light came on. They said they checked the electrical wiring in my car, but my batterie wont hold a charge. I checked the alternator witch was working fine but there is still an electrical problem somewhere in my car. I suggest finding a new repair shop instead of german car specialist, I know I'll never take my car back there.