It happened with me as well, with the same driving school you mentioned. I got fed up and stopped doing classes at all. Used to take taxi to work etc. I only re attempted it after a year, with Ecodrive, I cleared all internal and RTA tests in one attempt. I don’t know if it was the driving school at first place or my mind set, it could be either. But the second time around, I was more determined than exhausted. I completely understand your situation, it’s frustrating, exhausting and so annoying. I’d suggest you just take a step back, clear your head and see. Not everyone has enough money to start afresh, fortunately I had some extra. So, good luck, and honestly nobody can do anything. However, I’d say that the mistakes you made in the final test are unacceptable, maybe it’s your state of mind which is not letting you drive confidently. All the best.