I bought a mobile phone a week ago and it has developed a problem - it keeps switching itself off at random.

I have returned to the store and told them of the fault and they stated that they would not be able to replace it/repair it in the city I live in, and need to check that I haven't dropped it (which I haven't).

I live in Napier; they are now wanting to send the phone up to Auckland for "checking" - but can not give me an exact time period of how long it will take (at least one week - but maybe 3).

In the meantime, I need to do without a mobile phone and pay for the contract of service for the network UNLESS I pay $80 for a "loan" phone from the vendor (per week).

So my questions:
1) This within a week period is surely a reasonable time to expect a replacement/refund?

2) The repair time is unreasonable?

3) What happens if the phone is dropped during the transit?

Thanks