> When the ambulance finally arrived, she was “ok” so they had to pay couple of thousand Euros for a “negligent dispatch”

That part seems really hard to believe for me. The only time you should get charged at all is for prank calling. In fact, if you call and tell them and decide you don't need EMS after all they will in fact come anyways because they need to check on every call. And you will not get charged for that.