I doubt any damage was done.Just have them drain or suck out the extra.I put 8 qts. in mine and that seems to be fine.Yours is probably a half qt. overfull.Happens all the time at quick lube service.No reason to go ballistic! You will look like a crazed ahole if you go in there screaming about a half qt.Talk to the service manager and tell him you want a crossfire tech on the car every time in.Some people wish they had your problems.