If you see a bf3 ban with my guid read this straight from PBBANS ADMIN SURFY
I see several bans linked to your GUID however all have been raised in other countries bar one which isn't you either based on IP history etc.
In other words, the admin is simply going on linked bans and not looking where the bans were actually triggered.
They are not affecting your account. They are looking at linked IP information. It's the admins lack of knowledge on how dynamic IPs and leaked keys work. Feel free to point them into my direction on here.. If it were me I'd simply stick to servers who use the tools and know how to interpret the data correctly.