Instructing is a skill/art that has to be learnt, much like anything in life. assuming that you are well into your course, the term 'taking over' is actually 'intervention'. A skilled instructor rarely has to intervene, he will firstly have provided an adequate airborne demonstration (after a ground briefing) and by timely use of key words provide adequate prompting without 'getting in your face / on your case'.
Not all students and instructors are automatically compatable, both have strengths and weakness', and a student will have needs that need to be catered for. Students respond to differant instructors, and the instructor is to be the calming influence.
I have had experience of working with 'problem children' in the airborne environment, and in every case, a struggling student was in the position he was in because to some degree, our system had let them down. As it happens, the solution in virtually every case was to confirm that the student knew why he was expected to do certain things certain ways. Often the jigsaw puzzle of a flying course does not make sense until the last piece is inserted.
From what you describe, I would recomend an instructor change. Keep it impersonal, and has been alluded to already, a friendly chat with the CFI to explain why. If you do not enjoy learning, you are wasting your time, and the onus is upon the school to keep you (the customer) satisfied.