I'd honestly suggest therapy and learning how to ignore them from a therapist. If you're being milked as a 'lolcow' then they know you'll keep giving them more and more, and that's what they want.

If they know your character name, they can use it to look at your forum posts as well. You need to hold back impulses that make you want to lash out/explode at this kind of thing. I mean, look at this. 'Kiwi Farms, formerly known as CWCki Forums' that should say enough there on 'stop giving people ammo'.