Earlier quoted context omitted.
I'm not sure how it works on all European countries but at least on my home country if you do call 112 and hang up nothing is going to happen. If you call 112 and say something and the call gets cut for some reason nothing is going to happen either...
German anecdote: A few years ago my 2yr old son seems to have dialed 112 by accident. We learned about this a minute later when the fire department called back to check if we needed help.
It puffed up his chest a bit, but we talked about emergencies, how to get help, why we don't call 911 unless it's an emergency, etc.
I suppose if everyone did it they wouldn't be agreeable, but no one does, so you should too. :)