I have to say (possibly after being trained into it by 25 years online) that if someone's reaction to "don't push me on that" is to push more, my first thought is that they're a troll (or at least have trollish tendancies). Both online, and in person. Which will tend to change how I interact with them. (Typically I won't bother to call them out as a troll, as that rarely works in my experience; but I'll also reframe my view of the interaction away from being one of mutual humanity -- including not asking them to do things to respect my feelings, and taking steps to protect myself. Generally ignoring trolls is the most expedient approach.)
FWIW, "Apparently, you are enjoying causing me pain, and the challenge to do so after being threatened with consequences only ups the ante." is a classic indication of interaction with a troll IMHO. If this is someone that you didn't previously consider a troll, then it'd be worth at least considering that they have trollish tendancies and/or can "play a troll on TV". (There's a particularly annoying childish masculine culture involving that sort of "playing a troll" teasing to annoy someone to get a reaction, which some people seem to take a long time to grow out of.)
People "not letting it go"
FWIW, "Apparently, you are enjoying causing me pain, and the challenge to do so after being threatened with consequences only ups the ante." is a classic indication of interaction with a troll IMHO. If this is someone that you didn't previously consider a troll, then it'd be worth at least considering that they have trollish tendancies and/or can "play a troll on TV". (There's a particularly annoying childish masculine culture involving that sort of "playing a troll" teasing to annoy someone to get a reaction, which some people seem to take a long time to grow out of.)
Ewen