Bud, that's not the way it works. If you answer to a troll, you just give him what he wants, do you think that he (and the other trolls) came here to have a constructive discussion? Definetly no.

Do you report him? That's good. But if the mods are the first one that said they don't care, then you are just entertaining another idiot during his useless life.

I understand, sometimes it's hard to swallow (no pun intended) and harder to let it go, but trust me, I learnt it the hard way. The only way to avoid stupid people, is don't engage in a conversation/discussion with them. If you are the smart one, you are the only that will benefit about it, don't put yourself at their level, that's the only thing that they want (true obviously also in real life).