I entirely agree with OneMile's comments on Manx,
Flying's all about cutting the mustard, and even with the somewhat 'jobs for the boys' sponsorship you breezed into - not even the offer of a job at the end of it (it seems) was enough for you to take criticism on the chin and react to it.
It sounds that you're one of a few too many people I've come across who think that having the cash for licence automatically guarantees you one - and when you finally realised that a bit of effort was required on your part, you threw your toys out of the pram....
Stop rubbishing your instructors and look at your own abilities before criticising the professionals who are qualified to train you.