Basically on saturday I had a horrible lesson, it was four hours long and I did terribly. Various things such as lane switching, signalling the wrong way, etc. It got so bad my instructor refused to let me drive home. He told me I couldn't do my test which was meant to be today (Tuesday), I had to lose £62 because he wouldn't let me complete it. I'm rather upset about it. I'm in two minds to change instructors and go with someone else now, the way he was with me was quite rude and I think my bad driving was due to nerves, for him to tell me he wouldn't let me take the test was upsetting and killed my confidence. Advice?