Tbf you've also been a bit of a jerk to them you could have just said okay whatever keep insulting me idc but you fired back and kept going for nearly thirty comments
you're wasting your dignity by insulting them back, you could be the higher person and ignore them. Yet, you've sunk to their level and started firing these weak insults back. That's not how you get to be the higher person.
Let them blow up and tire themself out, at the end of the day, if you just ignore it, they will be the humiliated one.