Why didn't the owner of Petrcoin create a post here with a new alt to report about the hacking of his account?
Messaging a hacker to return the account won't ever work> It's like messaging a thief to return your stolen items. He stole them because he needed them in the first place.
Also instead of banning the account which i highly doubt will happen, The process of recovering hacked Accounts is very quick these days: Al he needed is a staked bitcoin address and an original email address of the account:
https://bitcointalk.org/index.php?topic=5089777.0