The best thing about Hack Detailers are they make you look like a grand master when you correct their wrong doings, and the customer will return and possibly bring a few more customers with him.

The Mustang- Looks like someone's gone at it far too aggressively, possibly with a wool pad and not worked the polish in enough. Mainly marring from what I can see, possibly on the bad side but nothing a polish pad and a medium cut polish couldn't handle at worst. I'd personally start with a light cut though.