just try any old polish or wax if theres any scratches in the paint theres this stuff at wal mart where u rub it in the scratch and polish over it (if you can fit ur finger nail into the scratch good chance it won't come out with just polish) . If that doesn't work (this is not a recomended idea) cut polish it, but just that lil spot. If you don't know what cut polish does ill tell u. It put very fine scratches in the surface of the paint, I don't think there visible to the naked eye, so pretty much u have to ruin the car to make it look nice. I only suggest this if your trying to save ur a$$ and nuthin else works. And about the janitor paying for the job to get it fixed i doubt that he will, he'll prolly say he wasn't even near you. good luck