dam idiots, i hate when places like this stuff up our pride and joys,
basically act polite and go in there, tell him what has happened and ask him how HE wants to fix it, be firm about what your talking about, talk with confidence but still use politeness if ya get me haha,
if the hick makes up a story and tries to knock your allegations back, take it a step further by going into more formal approaches,
similar thing happened with my mates commodore, went into a workshop to get something done, came out with a big paint chip on the door with what looked like touch up brush paint that was so noticeable, was on the passenger door so my mate didn't see it, he jumped in the car and found it about half a day later this place has been known to push people around if you sound soft, go in there be polite but firm and confident and things should hopefully work out, worked for my mate
hope this helps a bit........
sam