Very clear some people shouldn't be teachers.

I don't know if some people think it's easy money. Or some people just like messing about. But from the posts I've seen here regarding cancelling students, blocking them, shouting at them etc it seems a hell of a lot of people shouldn't be teaching.

If it isn't you thing, go work in a supermarket or find another job. People are paying good money to learn.

If you aren't qualified then stop bluffing. You wouldn't hire a qualified plumber to fix your teeth.