If you for example are on a wiki community, and then you get instantly blocked for no reason by an abusive admin/bureaucrat, is this an acceptable behaviour for them. Or is it that they can block for any reason (or no reason) and decide how their wiki is being run? As long as they do not break the main rules of Wikia?
Usually each wiki has its own policies even a administrators policy or rules and usually they have a process which you can report on that wiki and then its community votes whether or not to remove an administrator. If you think the block is unfair then see if you can get an actual reasoning from the admin in question if that admin or another admin refuses to unblock you for whatever reason even if its unknown then don't bother editing that wiki and move onto another wiki then.