Nokia / N73 — My mobile is dead

My name is Sameer.M. Kolhe from Nagpur.My brand new mobile N73 just sent to the nokia care center for version updating in P S ELECTRONICS 29 sidhesh pratksha ring road, pratapnagar nagpur. but I don't know how they broke my mobile display and cracked motherboard bits .this information i got from the shop were i purchase the mobile .when i gave them the mobile to repair then it was in the warranty and they said when warranty will over and then only we can repair the mobile .But my mobile is in warranty . I gave them for software version updating and they broken my mobile's hardware . They always says that come tomorrow and take your mobile to your home and always gives me different excuses that the software is not updating fully and etc .my mobile's purchased date is 7/7/2008 and warranty till 7/7/2009 and i gave the mobile on 9/2/2009 and they said that your mobile warranty is gone .When i gave them the mobile the mobile was working but only version was not there. and nokia care workers fully dead my mobile and my joystick and keypad is not moving .
Please I request you to send me feedback on my e-mail [[protected]@yahoo.com] and give me solutions on above matter.
thanking you