Mate... Take it up with your chief pilot... or chief flying instructor...
I was in EXACTLY your position when I was learning to fly, every time I flew with this individual it almost reduced me to tears. So I went straight to the CFI and voiced my concern... and he said he'd make sure I never flew with that instructor again.
REMEMBER IT'S YOUR MONEY.... that you are spending. Spend it well
When I flew with that idiot instructor, it also made me question my ability to become a competent pilot.... now I'm flying big shiney jets over the world...
You'll be right