That is no way for an instructor to treat any student. All students find some parts of the PPL course difficult, even though they are enjoying the challenge as you were until the change of instructor. It is the job of the instructor to not only iron out these difficulties but also to encourage students through the course. Nobody (except perhaps the ego of the said instructor) benefits from these outbursts. I have come across several instructors who rule their lessons by fear and it quite simply - as in this case - doesn't work.
As an instructor I can say that on occasions it is difficult when a student consistently disregards any information/advice you may deliver, but that is no excuse to bite the head off the poor chap/chapess. Suggesting that someone may fail a flight test is unforgiveable. It is most unreasonable that you were spoken to like that. This chap seems to need to reconsider his attitude.
My advice to you would be not to fly with him again. You must fly with your original instructor as soon as possible and get yourself back into enjoying going flying. A change of instructor for a couple of hours mid course is a good practice as it does check for complacency and gets rid of the comfort zone you have acquired. It looks like you have had a rough experience with this. Back to original instructor and off you go again.
Happy Flying!!