Nokia — not repair the handset in warranty period

I Vijay Gagpalliwar purchase Nokia 6275 handset bearing Sr. No. RSN RNKMVF566402 from VEDOM Co. Nagpur on 13/03/2009 for Rs. 9500/-
The said hand set was working properly for some days but after some days there were problems in the operation of the functions and got hanged duringthe operation etc. I approach to the authorised service centre on 07/01/2010
That on 07/01/2010 service centre request me to wait for half an hour and after that they asked that there are some software problem and it required time to load and upgrade the software requested to come on next day for delivery of the handset vide job sheet no.[protected]/100107/21. (At that time my blue tooth is working) Next day I received the handset but after three days I saw my handset was not working properly and blue tooth is not working.
I again given the handset to service centre they requested to leave the handset for troubleshooting for two days. After two days service centre replied that the handset sent to Delhi for repairing and its take time fifteen days.
After ten days when i went to service centre for taking delivery they asked me to wait for half an hour but after near about two hours they not rectifyed the problem and try to return the handset with wrong reason Tampering the handset. I refuse the handset because they given wrong reason.
Your service centre not rectified the fault so it is manufacturing the defect so please the replace the handset because it is in warranty period.
Your Service centre is not able to rectify the problem and giving wrong reason that the tampering the handset. This type of reason not expected from NOKIA company.
Kindly look in to the matter and repaired/ replace the handset immediately.
regards

Vijay Gagpalliwar