Brought it in today for the routine first service. Was told it would take 1-2 hours. I had agreed to wait & as the dealership is some way from home. After 2 hours in the waiting room the service guy came with his checklist documentation & effeciently went through all that was done. I signed & paid & was told the car would be ready in 10 mins. Little did I know that they were doing a software update that eventually took a further 3 hrs. They said their system crashed...was'nt gonna get to worked up over it. So when I was told to collect it round the back of the service area, there she was gleaming, with droplets of water all over......shock horror...next to a brush washer. I did'nt raise the issue then as I was at that point under time pressue, but now on reflection, I cannot believe they washed it in a brush washer without running it by me. On closer examination after it had dried there are clear swirl marks (Phantom Black) throughout the body that were not there before. I am furious & am gearing up for 9am Monday morning, especially as I was so calm with the 5 hour service. Any ideas on approach strategy. Do I have a case in getting a professional job to rectify & billing them