Not sure what kind of dialog you want to have. It was a personal insult and it got deleted. Not a big deal. You weren't scolded, lectured, or given some warning about doing it again. You did flag a different post due to what you felt was also a personal insult. I reviewed it, didn't see anything and closed out the complaint.
I try to keep the No Personal Insult rule pretty simple. If I see a post that says, "you are a...." and that is followed by something the rude then the post gets deleted. It happens all the time. People get upset, post something and then it gets deleted. It's only as big of a deal as you want to make it.