Stop crying and stop premading.
I can't believe I read so much of this on this forum. "Stop premading". In a MMORPG, you want people to stop playing together in order to achieve a certain goal. This is ridiculous
If you want to play solo, there are tons of other games (like retail WoW for instance), but most of us came here to play with other people, make friends and have fun this way.
You guys should try it I swear, try to socialize, try to talk to people and play with them, it's a really fun and enjoyable experience. And then maybe you'll be able to make a decent premade group too, and have actual games in PvP. That's the goal of a MMORPG to be fair, I hope you can understand that.
On topic, even tho I didnt participate in those AV premade, I think the ban was ridiculous and showed once more how some nostalrius GM have absolutely no idea of what they are doing (or maybe they do which is even worse). If you don't want people to do this, just make a broadcast to ask them to stop it and the problem is solved. Noone is banned unless they continue. But make your position clear before taking actions, because up to now, using macro or script was not agaisnt ToS.