Well Dave it sounds to me like you may have had a lucky escape. My local stealer GH subcontract out their cleaning and whilst I was sitting around all morning waiting for my Startech wheels to be replaced - I won't go into it again. I was watching the listless fecker who had been given the task of keeping their outside stock clean. He ambled about with a bucket of dirty water and a leather and proceeded to grind whatever dirt there was on the cars into the paintwork, then he'd apply a bit more dirty from his bucket.
They washed mine once and it came back covered in swirls
.......... since then I have told them not to wash my car, I do it!!