You're not going to "win" arguing with SVF. Just stop responding to him. If he continues further I or someone else will take care of it.

Same reason when I "argue" with a few of my trolls I will respond once or twice. But there is no winning with them.

I unapproved his posts that were worthy of it. IE, the arguing that had namecalling in it. Left the others as is, as it was just discussion back and forth.