This doesn't sound good. I think you might need to have a chat with the Chief Instructor and maybe have another instructor.
When I think about all my instructors, they were each, to a man, unflappable, even once when I did make a very dodgy maneouvre (nearly resulting in a dynamic rollover). Only during the debrief was the severity impressed upon me; not in the cockpit.
Cheers
Whirls