Its a shame what the guy said as it was very unproffesional. A reprimand was in order.
With that said, I'd like to comment on what others have posted here. It is common for people to call the police to discipline their child. I'm not sure what causes parents to do this, but a simple temper tantrum will get a 911 call from some people. They want the police to come out and raise their children for them (just like they expect teachers and schools to do).
When I was a kid and I acted up, I was punished....Now, instead of punishing kids, lets have the police do it. Why do the dirty work when you can have somebody do it for you.
This profession is just like many others...where you get a 'customer' that is calling in about something like this. Like other professions, its OK to think these things in your head but it isn't something you tell that person on the other end of the line, especially on a 911 line. In our city, people will call 911 for a simple parking complaint. My thought to them is 'What idiot calls 911 because somebody is parked in your reserved spot?' That is my thought....the response is 'Sir, please use 911 for life or death emergencies. I can assist you with a parking complaint this time but in the future, please only use 911 for life or death emergencies....Now, where is this car parked?'