I probably would have had the parents quieted down after the first altercation, when it became obvious they were getting out of hand. Normal bickering and begging is one thing, but this kind of "chatter" isn't part of the game, and can hinder your ability to focus on the game. Especially the one who is HS certified (I assume this means as a ref).
Of course, this assumes this all took place as I imagine in my head, and my head can be a pretty creative place.
