I gave you an upvote correction. I know it's frustrating, but sometimes comments get an unfair downvote, and then I think two issues kick in. One, less people see the comment, so you're less likely to get the correction upvote. And two, the priming effect kicks in, and people see your negatively voted comment as inherently negative, and don't give it a correction upvote, or pile on.

I've seen this happen for a while. My only advice is to just roll with the punches.