There's a person on here who's trying to make people made by trolling and I was wondering, how do I report them?

It makes me very uncomfortable because I've never seen someone here trying to upset people on purpose..

I just looked and it seems like they deleted my comment on one of their polls about Bestie and EXID where I was politely saying that trying to make fans of EXID mad wasn't very nice, and yeah. I'm kind of bothered right now. They have two accounts and one account is posting the rude poll and the other account comments on them. I know they're the same because both accounts were made a few days between each other and it's just really frustrating. 

Please help me?