Is shanryzen a cheater??

Hi, more than a month ago I paid shanryzen to unlock an iPhone… First he told he couldn’t do it and return the money… After that he told he had a new source but more expensive, so I paid him again 200USD to unlock an iPhone iCloud but has been already a month since payment was sent and he is not answering at all… Not even to say sorry I can’t do it, at the beginning I was expecting it was a delay for Christmas but Christmas finish already and still no reply…. So I want to avoid everyone about doing business with him.