Advantage BMW Midtown

I initially brought my car in for a recall computer software update. They did an A/C check and it was determined I needed a new compressor. I agreed to have the work done; it was supposed to take 2-3 days to be complete. It was completed by close of day. I was told I can pick my car up on the next at 7am. I asked the service agent to provide me with a picture of my old compressor. He said, we can’t provide it has been thrown away. My response was so you send me picture of when your doing the inspection report, you take pictures when I bring my car in, but you take a picture of the work that is supposed to be performed. Sales agent Stan says unfortunate you have to request that . I didn’t request pictures be taken of my car when it’s dropped off, I don’t have to request pictures of the car being inspected but I have to request a picture of a my old part and pictures of it being completed? He said they clean every night when they close so he is sure the trash has been emptied but if he finds it he will put it in my trunk. So, how will I know that the worked I paid for was done? How do I know that I have a new compressor? Horrible Horrible Horrible