@ArenaNet: We want to HELP you...
Insert Personal Achievements and/or Youtube Channel Here
While I agree that they could be a bit more open with their info, if they release details re: how some bots get away with it and how some legit people get banned they’d be giving botters the info they need to get around whatever system they have in place right now.
It sucks, but just keep reporting in-game, I guess? Get a group together to report if you can – it makes sense that if someone has multiple reports their case would be looked into sooner, at least.