It's sad to think of all the young people and their well-meaning parents spending tens of thousands of euros trying to get into an aviation career, only to be treated like dirt, and then threatened like this if they complain. It's bad enough that the training costs so much, and the job, assuming you ever get one, pays so little, without being being treated badly by flying schools. I really think more people should call this kind of behaviour out, via reviews etc, and report it to CAA, EASA etc.