I'm not waiting for a miracle, I just want him to publicly announce his decision regarding this matter. Of course he can do whatever he wants, but at least we get an answer since he kept saying he would defend himself and he would answer to all the questions.
He is probably waiting for more negative feedback on his profile. I can see 5 negative pieces of feedback already, and everyone knows that he cannot participate in any campaigns anymore. The account does not have any value without your feedback. Another negative feedback won't harm him further. So, he is not answering you anymore when you ask about the refund. The amount is large enough for him, and it would take a long time for him to earn this amount by working in real life. Or participating in campaigns on the forum. So, I would say one thing: go for it.