Xperia Z3 3 weeks old refuse to replace

I upgraded my Vodacom phone to a new Xperia Z3 on 23 february<br> My first and biggest mistake,was not reading the complaints against Sony Mobile on here first<br> my second mistake was actually going back to a Sony phone and getting the Z3.<br> I found that I didnt really like the Z3 from word go,<br> too bad,live with it for nxt 2 years,sure no probs<br> I told this to the voda guy,he said \well use it as much as possible in case anythings goes wrong with it"<br> but when it actually breaks down on 15 march by not been able to make and receive calls"