Best to just switch off when it gets too much for you. If you can't enjoy the game because of other players even after enabling tells from friends and guild members, then it's not worth it.
What are these foul mouthed trash talkers going to do anyway...challenge folk to a thumbs at dawn duel, rogues get handbags at dawn ready?
It's just words on a screen and yes, written words can be hurtful but only if you let them.
Someone once said, "the pen is mightier than the sword'. What a load of rubbish. I'd sooner be attacked by a pen over a sword.
Someone else said, "sticks and stones may break my bones but calling names don't hurt me". That's the truth.