I checked WP:TROLL and couldn't find "refusing to admit being wrong." (And no, that's not an admission of wrongness, though I expect if I hadn't said anything you'd have claimed it was.) However, I did find this:
Genuine dissent is not trolling. Biased editing, even if defended aggressively, is in itself not trolling.... They are only trolling when they are motivated by a program of malice rather than ignorance or bias.
Do you really seriously consider me a troll?  (talk|Contribs)