The scheme is far from perfect, but at the end of the day we still have a scheme, no one is being forced to join or stay, like some of us I will sit back and way up my options.
There is no excuse to be rude and arrogant, if your not happy walk away, the scheme obviously no longer suits your needs, however, if you change your mind in the future and find the grass is not greener on the other side, you will find there is no way back.
As regards your tantrums and outburst, I hope you do not carry on similar behaviour during your driving.
Unfortunately I have suffered a brain injury and occasionally I get confused and often say the wrong thing.