I forgot to update this...
I went back to enterprise and asked to see the truck. They said it had already gone to the body shop for a repair estimate, but they could show me pictures. I said sure, and the girl behind the counter pulled out her phone and showed me a dented bumper, loose piece of plastic trim, and cracked fog lamp.
Then I pulled out my phone and showed her a picture of a dented bumper, loose piece of plastic trim, and cracked fog lamp dated the day I picked it up. Then I asked for a receipt showing that I and my insurance company owed nothing and that it was returned in the same condition that it left in.
**** you enterprise.