Hi,
Welcome to MoveToNZ.
I'm very sorry to hear you have had problems with this company. They seem to make a habit of taking people's money, then close the company and start up again with a new name. The last I heard was that the NZ Commerce Commssion were investigating them, so it's a shame they haven't replied to you.
Have you thought of trying the
International Consumer Rights Protection Council ? Mr. Arun Saxena used to be the contact person, but I don't know if he's still there.
I do hope you can get your money back, although it may take time.