In the last week, a buyer messages me that he need a logo and he sent me a font image. I saw that and realize that I can do this easily. Then he ordered me and when I submit the first draft then he said this was not his font what he provided. Then I show him a screenshot that this is the exact font. But he did not accept. Then he sent me another image what he like and I show him samples according to his samples. After that he sent another image and then want refund. I show him 15+ samples and that take 5+ hours. Finally, he cancel the order. I think he was a fake buyer and I have a question? How a seller save him from a fake buyer?