Nokia - N72 — MOBILE NOT WORKING

I m Hasmukh Padharia.
I purchased Nokia - N72 in 2006 on date 15/10/2006 from Jamnagar.
Mobile battery no is[protected] MI46LINM63689
From one week my phone is not working. It can't switch on also.
Nokia Service Center people says that its can't repaired.
Phone is never exposed in water or never droped from hand within these two years.
There is some technical problem in mobile and it was not fully checked in machinery inside mobile from developers of mobile.
So, i requested to change this mobile because its not a fault of mine.
Its a technical problem in mobile. so i want a better responce from u to solve my complaint .

THANKS...