Really should not break my rules.

I have many rules , mainly to stay safe. One of them is to not take same day or night clients. I broke that rule last night and as usual it was a mistake. The guy spent 20 minutes trying to talk my fee down. He then started masturbating while we were talking. I started to leave because he hadn't paid me a dime. He then gives me the money but then pulls out a picture of a little girl and wants me to dress like her. I'm immediately creeped out and tell the asshole that it was a last minute call and I don't have different clothes, plus the picture is of a minor and I don't want anything to do with him.
He the pulls out more money and begs me to stay and said the picture is only for the clothes , not the girl. I should have left then but I didn't. I know I was dumb but he seemingly wanted to pay a lot for something simple. Fast forward, I take my clothes off and the guy can't get an erection anymore, I try to help but nothing is helping. I immediately know what the problem is. I'm only 4'11 and can look pretty young with clothes on, the guy was imagining me as a little girl when I had my clothes on. When I took them off, he made a remark about me not being clean shaven and wish I didn't have any piercings. I gave the bastard his money back and left. A friend gave him my number and must've told him that I can pass as a little girl. I'm sorry if I offend people, but that is sick.that is why I'm independent. I don't have to take clients like that.