I agree with everyone else; ditch this guy - he shouldn't be an instructor. I'm speaking from experience; I had someone very similar, stuck with him because someone I respected had told me to, and ended up with almost no confidence and scared to drive to the airfield, never mind fly. It took me ages to get over it, and added lots of time and money to my course - please learn from my experience; stop flying with this creep NOW!
I ended up with a quiet, calm chap who very gently demanded that I do the best I can. I still heqr his voice talking to me at times - insistently, quietly, and calmly. I think that's the kind of voice I'd like to hear in an emergency.
Telling the instructor and/or the CFI is a good idea, but if you don't feel able to, then just change instructor. It's your money, and what they think doesn't matter.
But please don't give up. Despite the fact that a fair proportion of my PPL course was an absolute nightmare, it was all worth it in the long run - flying is wonderful.
