Thread:Sannse/@comment-5143627-20120729015357/@comment-8-20120731015946

We usually only ban people globally in extreme cases, often local bans will do. When someone is switching accounts, that can mean blocking a few times, but often they will move on if the admins are persistant.

I'd suggest trying that first, and just blocking each account on your wiki as they appear. Then, if the problem persists, send the details to us via Special:Contact, and we can look again.