How to handle in-game stalkers?

[landua]

I've had a stalker coming to my FC yard for over 3 months now and whisper my FC members as they walk by if they haven't got him blacklisted.
He was removed from my FC because of incessant harassment to other players.
He admittedly has severe mental health issues.

I've reported this player at least 20 times and Square Enix refuses to do anything. Other people in my FC have reported him multiple times. He must have at least 50 reports on his account.

I've tried asking him to leave.
I've tried ignoring him.

I'm thoroughly disappointed in Square Enix's customer service as they've done nothing to protect me & my Free Company from stalking and defamation.

I considered unsubbing, but in my eyes, that's letting the stalker win.
Does this count as cyber stalking? I have his full name and address and could file against him if I needed to.

Please help. I am extremely frustrated.

edit: blacklist was the first thing I did!