I have screenshots of WhatsApp Messages. But Instagram/Facebook support system is completely dead. They only try to help people with their QnA site. They don't listen or care about individual users.
His Medium profile has no articles - https://medium.com/@hosanovg/
I don't wanna disclose his name in the article as of now. Let's see. I have no connection with him now and I don't wanna talk with him anymore. I just hope that he just leave me alone.