Two weeks after moving out, my landlord said that I was going to be charged $40 for cleaning fees. After several emails of me trying to ask him what I was being charged for, he claimed that there were some hairs on the vinyl mattress which had to be cleaned. However I had wiped the vinyl mattress down with sanitizing wipes before I left; there was no way it would even be remotely dirty.
When I demanded photo or video proof of uncleanliness, my landlord could not provide them. But at the same time, I don't have photos or videos to prove that it was clean when I left. I also didn't arrange a move out inspection. What should I do? Am I obligated to pay the amount?