Then you don't understand how the rules here work evidently. It isn't about calling someone a twat, if for example you fly off the handle in global and start calling people homophobic words beginning with the letter "F", this constitutes harassment. Or if you call someone a "worthless "N-word" This is considered harassment. There is a phrase i'm known to have thrown out in global a lot that got me slapped with the ban hammer. It was called "sexual harassment" I wont write it here suffice to say anyone who knows me knows what i'm talking about.
You have to learn what you can and cant get away with. You can say whatever you like and people use those words a lot but if someone in the game petitions you and it falls into the games rules of harassment you'll get slapped with the hammer. That's just how it goes..
first offense is 24h, 2nd is 3 days, 3rd is 7, 4th is permanent.
PvP harassment doesn't even qualify to be noticed. You can gank and grief, padcamp, corpse hop, fan, etc etc anyone anytime so long as you do it without flaming them in an obscene manner. You can grab the flag and run around with it aimlessly screwing over your team in the process which is another new tactic that we have seen. Nothing can be done about it. Me and my guild made a habit of griefing world boss raids. It pissed off many players to the extreme and it was glorious. again this is perfectly fine to do. But if we were to spam blatantly obscene words while doing it that would be a no no