Here's a helpful phrase: "don't feed the trolls". When trolls try to vandalize don't talk to them, ignore them and wait for them to get banned. Trolls just want to get attention by pissing off people, if you talk to them and get angry at them it only encourages them to keep trolling, if you don't give them any attention they get bored and go away.
Topic on User talk:Mr. Tenno
Word of advice