Please explain.

Yesterdays 04 October i went to a Vodashop Zevenwacht Mall and did an upgrade. The sales consultant opened my new Iphone box in my presence and tried to activate but Iphone would not switch on and he advised that the battery may be flat and would just need a charge. Upon arriving home which would be +- 2hours later i popped the phone in the supp**** charger and cable and left it a while(+-1hr). Tried turning on the phone no luck. Tested with a different cable and charger still no luck. Does not even look like the phone is charging. Tried a reset no response<br> <br> Contacted the store who advised i can bring in the phone and they would have it checked and if need be exchanged. They advised me that this would take 5-7days.<br> <br> Please explain why i cannot get an immediate replacement as this is clearly an out of box failure. <br> <br> Also now i cannot use my contract as i also did a sim swop (new phone takes a nano sim) and it does not fit in my old phone.<br> <br>