No, actually none of those things. Just wondering what I did wrong so that I know what to do differently next time. And I never got an answer to the question of what if any rule that I broke to get a warning.
Call it complaining if you must, and it probably comes off that way if you lump me in with all of the usual complainers.
But the experience makes me wonder if they might have a point. If I got a warning and no one can explain why, maybe some people are getting points under similar circumstances.