Let's not upset any little bots. There is no need to resort to gating into dungeons or releasing/pulling in aggressive critters. No bot is worth getting even a GM warning on your account.
Firstly, page on the tamer and give GMs the opportunity to check them out.
If that doesn't work, it may be that you need to page again later when another GM is on, I've had a few who passed muster first time then vanished the second. Possibly they thought the'd get away with being AFK the second day and went fully unattended. But I haven't seen a legit tamer who ran round the
exact same points in the pen repeatedly and tried in vain to release and kill a pet that wasn't his. Or one who wouldn't say "mind releasing the bulls?" if I tamed everything and stood in the pen. Jumping on the same bull your taming while there's another right behind him is another obvious one. Tamer bots are the easiest to spot, in fact the only time I got someone wrong it turned out he was there, but he was actually setting up his script rather than running it LMAO. Yes, he actually said he was setting a macro up for scripting. Not much fear among the cheats these days.
Here are some legal ways you can deal with a bot without upsetting or causing him harm...
Herders: herd a bull the bot is taming over the teleporter outside. Most scripters will pop through the teleporter and stop taming.
Gaters: don't gate to a dungeon, gate to a room in Jhelom Inn.
And for anyone else, I generally just tame the bulls and release them in the pen next to the main one. Scripts aren't capable of looking beyond their set pathways, and that ensures that other non cheating tamers can get to the bulls easily.
Of course, there are the really annoying scripters who are actually attended and get past the GM test each and every time. They're a real menace to deal with and imune to teleporting or gating. These guys are the one reason alone why you should never do anything that even smells like griefing, because they do the exact same things as bots. You won't know they're there until you mess with the bot and they react immediately. Usually in fairly colourful language

With these guys you can try paging though, I tend to look out for them at really quiet times and ensure I first visit with a stealther. Sometimes they're dumb enough to be unattended when they think the shard is empty.
It's a real pity that scripting alone is not enough for a GM to ban. They have to be unattended even if they're clearly quacking like a good bot in every respect. As long as your attended it seems you can do what you like. No wonder PvP cheats get away with it.
Wenchy