Unhappy without phone

This report is for my dear friend, Ntombikayise Mlotha: I bought a Blackberry Z3 at Exact store in November last year. In february the phone gave me a problem. Refused to switch on or even charge. It would only show the orange light but not come on. I returned it to the store. I got a call from their repair centre that it will cost R2130 so that they can give me a new phone because that one was damaged. I told them that this was too much and would rather have my phone back. I was then told i must deposit R330 so that they can return my phone without even fixing it. I feel this is not fair because obviously this phone had problem not caused by me and it was still under warranty so why should I pay anything. I am now miserable without a phone and no reasonable explanation.