So I sold a bass to a guy on here. It didn't work out and I agreed to let him send it back to me. The bass has shown up damaged. I am having to file a claim now for the damage through FedEx all while not having proof (yet) that the damage didn't occur while it was in his possession. When is the proper time to refund the money? I took video and photos of the bass before I sent it to him. I am waiting to see if he did the same before shipping it back to me. Any advice is appreciated. Thanks.