BMW of Fairfax

I brought my M3 convertible in because the AC was not working. They diagnosed the problem saying the AC needed to be recharged. they said it was fixed and I was billed $380 for that service. A week later my AC was not working, again. After another trip to their service dept, and another 1/2 day of work missed, I was told I would need a new AC condenser. I was told it would cost $1100. I asked if I would be credited the $380 from the first time I paid to have the problem fixed. I was told I would not. I gat a song and dance from the service person. After the manager was brought in, I was told I would be given partial credit, $260. They had to order the part so I left and decided to think about it. ***I originally made a decision to go to the dealer because this vehicle, is/was my dream car. I was not about to take any chances with it. I was willing to pay a premium to have it serviced. But not to be shafted!*** After thinking about this for several days I decided not to go back. I replied to a letter that the MANAGER of Fairfax BMW had sent me before all this had even begun. I had purchased an X5 from them so I was on their mailing list. My letter to the manager explained my experience at their service department. I explained that I would not be bringing my vehicle back for anymore service due to their inability to diagnose and fix my problem correctly the first time and the subsequent request for more money to fix the same problem. I also explained how I would like a refund, but that I was doubtful I would ever see it. After approximately a month since my message was sent, I have received NO reply. I have also never gotten a call back from their service department to see if I was satisfied with their service or to inquire about my vehicle's AC problem. Go figure, JCD1996