networkn:KiwiNZ: It may seem that I am being hard ball on this, however over the years I have assisted many people with disputes like this and it is very hard in New Zealand to get a fair hearing and dealings with retailers and providers. It took a lot of hard work over many years to get the good consumer rights we enjoy in New Zealand and all New Zealanders need to know them and use them and do not allow retailers and providers to erode those rights.
If retailers etc. are not happy with the consumer law, get a new business.
I would almost guarantee if you have given them the same advice you are trying to give today, you didn't "win" on the merits, but rather the company has decided your bullying tactics are not worth what it will cost to get rid of you. I wouldn't consider that a victory by my set of morals. I believe you as a consumer have a responsibility to be just as fair and reasonable as you expect your retailer to be and not just act in your own short term benefit. The OP has been given a fair and reasonable course of action which falls inside the law and that should be the end of the matter. If they fail in their duty, which I wouldn't expect so in this situation, then there are remedies which are outlined in the same act which the OP should make use of.
please do not make this personal, you do not know me, how I do things or results obtained and why.