Request Exchange

My phone was given in on 01/03/2016, I tried to claim from the insurance and they approved the new phone on the 04/03/2016, the damaged phone was send to the Advance Repair Centre on the 04/03/2016 and it has been there since, the status is request exchange since 10/03/2016 and how difficult can it be to exchange a phone and send it back to the correct store<br> Only on the 10/03/2016 was I notified that the device was still under warranty and it would need to be exchanged and it can take up to 21 days!!! <br> <br> I need that phone a.s.a.p<br>