mjposner,
I like to take my car in washed and clean (as of late) whenever I need service or something done. I do this since I don't trust anyone to clean my car, one never knows what rags they use etc.
I make sure to leave instructions on the work order NOT TO WASH the car, also I make sure the milage is noted on the work order before I sign it.
Let us know what actually happened if anything once you get your car back. I would expect the SA to call me if anything happened.
I am reminded of what once a unknown author wrote ...
Quote ...
Some People
Make Things Happen,
Some Watch
Things Happen
While Others
Wonder What Happened
End of Quote ...