Dropped off my bmw x5 to have headlight serviced.t...

Dropped off my bmw x5 to have headlight serviced.they gave me it back said it wasn't a bmw part.I took my bmw x5 to two other locations they said it was it saying bmw xenon on the headlight.I took the x5 back to south bmw and they then said it was factory.they gave me a loaner I want ed the headlight flashed because we put a new alc module on it and it was only turning on when you trick the headlights..I pay them 200.00 to flash it they say the headlight still isn't coming on.they tell me I need a new headlight amd it was 2600.00 bux.I declined said I was coming to get the x5.I take my wife to get her x5 and pay to pick it bill was over 400 bux.remember nothing was fixed.that's what I was charged for one hour of labor and flashing the bmw to make headlight work.so we leave in the x5 and my wife goes to car wash dew to how filthy the x5 was.We noticed when we got home water in the headlight turn signal no longer working.the headlight worked when we took it there.just had to un plug the passenger to get the driver side to come on...so I pop the hooD and they didn't put all the screws in back of headlight that covers electronics and two tabs were broke.we called them and have sent a email.I had my oil pan replaced at this location and other things and had a positive experience.not sure what has happend.I'm going to north side location to try to get a better opinion.