Its been a while, but I got banned from Ultima Online many years ago when I blew up everyone at the Britain bank using explosion potions on pack animals. There technically wasn't a rule against it, but they said I was straining the server (the initial deaths of people in full gear led to wave after wave of newbies getting guard whacked trying to loot them, and the whole area was super lagged for a good 10 minutes with corpses and items
everywhere).
The first ban was a week if I remember correctly, which kinda pissed me off and inevitably was the proverbial straw that broke the camels back, making me decide to stop playing. The second ban was permanent when I came back and immediately did it again and tried to pretend it was someone else
It probably didn't help that there was apparently an invisible GM there who saw me do it.
I was bored of the game by that time anyway, though - they had added Trammel and the game was going in directions that I didn't like.
I had my name changed in Dark Age of Camelot after some goofball reported it repeatedly. It was an alt I was goofing around with on a different server and realm named Yous Uck. The funny thing is I think I convinced the first GM that it wasn't what it looked like and that the name was just an unintentional english combination of two traditional Asian names, so he didn't change it. The next GM said I had to change it, and I *almost* got them to change it to Cann Abis (he said OK at first) but last minute he apparently realized what I was doing and made me change it to something else.
I had people tell me they were reporting my name on Shadowbane numerous times, but it never did get changed. Had a character named Besti Ality, a centaur. Although, in their defense, the GMs never really did anything in that game so likely never even saw the name.
"Your city is bugged out and is changing ownership to a random player every few hours without any siege happening? I'm sorry, we can't help in siege related issues. *5 hours later, a new GM arrives* But how do we know it's really YOUR city? The ownership of all the other buildings, you say? *5 minutes later* Alright, I've removed the *entire* city in question. Here is a seed to build a new city tree and some deeds to plant more buildings. Oh, I'm sorry - I can't return the city or the barracks or the npcs to their former levels or rebuild the walls or give you back any of the items in that shop I accidentally deleted too since I didn't bother looking at them first and don't know what you had before I fucked everything up. Have a nice day." (that was actually a true story... made me and 50 or so of my guildies quit lol).