Banned on what grounds? Its not against the rules to scam someone.
Im sorry you think so.
I have been reporting hacked accounts and a staff member(not mentioning names) has banned the accounts.
If there is no rule for it, staff members should decide by themselves what is needed to do.
I doubt that an account gets banned just for "its hacked".
I could provide you proof if you want, since I still have the PM from the staff member. I think the ban was deserves since robertt was going full delusional.
All Im saying is that there is very likely more to it. Otherwise its too easy to get someone banned when no one was actually hacked. Admins (and maybe globals now as well?) also have additional information that might help them decide (like e.g. IP addresses).