If you could be bothered to get a GM in game, you could start eliminating these bots in real time. Popping between dungeon boss spawn sites will next you 5-15 bots per, and just randomly walking in the the newbie areas (i'm thinking stonefalls here) will next you a dozen harvest bots.... i've seen 6 in a small area just up from the spider cave.
Until you do something like this, you will continue to have bots ruining your game.