"Worst Hotel Experience"

This morning, on her way out of the hotel, my sister accidentally left her wallet on her bed. She realized it a few minutes later and went back to the hotel. When she got up to her room, house-keeping already cleaned it, and her wallet was gone. She spoke the manager at the time (Mark), and he had her go through all of the dirty and clean laundry. When I walked through the doors of the hotel, I said, "My sister lost her wallet..." His response was, "so she SAYS." I was a bit unnerved by that response so I went to check on my sister, who was in the process of going through the piles of dirty sheets. While she was digging, I decided to talk to Mark again. The whole time I was talking to him, he wouldn't look at me. HIS EYES WERE STARING OUT THE DOOR AS I SPOKE. I had to pause, ask him what was outside because I was trying to talk to him. He looked back at me, I spoke, and his eyes wondered back outside. I know it was my sister's fault for leaving her wallet behind, but he, as a manager, DID NOT EVEN PRETEND TO BE HELPFUL. He plain out said that "I don't believe that she left it here. She must have dropped it outside." I had picked her up from outside the hotel. She got into my car, we drove around for 15-30mins before she realized she didn't have her wallet, and we went back to the hotel. While I was sitting by the door waiting for the police to come take our report, he didn't have any problems looking into other people's eyes to talk to them. I can't believe how poorly we were treated by Mark. He strongly believed that my sister didn't leave her wallet in her hotel room and that she must've dropped it outside (which makes it not his fault for not being able to find it). He also told me that no one has ever left their wallet in their hotel room/this has never happened before. Anyway, he's the type who'll treat people well when everything runs smoothly. Yet when things do go wrong, we're the idiots for booking a room there, and he'll treat us as such.