Ban may get rid of the bot but doesn't fix the issue...Alot of these are hacked accounts so banning that one account they get another. Most MMo when they have tis issue they find out what is allowing them to break the game physics, patch the game so it can't be done and mass ban. Unfortunately if you look at WoW it is a constant battle because as soon as they implement a fix they find another way of cheating the game. They only way to stop this is for people to stop using there service. If no one buys their services it would become to costly to bot/hack.