He's not a moderator or a part of recovery team, so I don't think he's able to get your account back.

If you want to get your account back, you need to follow the instructions in this thread Recovering hacked/lost accounts, sign a message from your old address is a must.

Is your account get banned? this would be time consuming since you need to create new thread about ban appeal too, you can check your old accounts were got banned or not in this site https://bpip.org/