What do you have your children say when they don’t hear you? Is this something regional? In the south, children are taught to say “Ma’am?” or “Sir?” when something needs to be repeated or clarified. Other people say “Pardon?” or “Excuse me?” As a child, I always felt silly saying “Pardon?” like other people, because it sounded funny to my ears.
“Huh” is starting to become common in our house, and it sounds quite unpleasant. Thankfully, it’s an improvement from ignoring mom or not paying attention at all, so I’m not displeased entirely.