I just dont understand why people keep applying without reading the reason and fixing it. If you that badly want to do a course that is different from what you have studied do something small in your home country to show your looking into a new field of study before you actually apply and get slapped by a rejection, also make sure you explain the reasons for the change and dont be like because i like the new field. New Zealand isnt so easy actually, they have a meticulous procedure, and can take 3 months for the visa and they actually require some people to send the living costs for a year to a bank in NZ and then have that NZ bank verify the funds.
Plus in all honesty cost of living to the money earned is a B**** there. I got plenty of people there saying Auckland is now starting to look like a money hoarding city.
For people who have got rejected multiple times : READ YOUR REFUSAL REASON BEFORE YOU JUMP IN THE SAME HOT TUB HEAD FIRST
If its too generic get your CAIPS notes and read it, its better than spending 125 everytime you apply.