[Resolved]  Nokia - 6300 — repair of mobile phone

I have purchase a nokia-6300 on 10th of march09.
after 3months there was a restarting problem in my handset,than i gone a nokia care center for get my handset repair.After 30 minutes they update softwere of my phone.but next day i faced the same restarting problem.after that i gone nokia care center n number of times.on 4th dec 09 they given me a job sheet[protected]/091204/36) & told me we are sending your phone at our head office and After 10-15 days your phone will be repaired and than you can collect..
but after that they are saying that your phone is tamperd and you have get repaired it from outside.. till now they have not repaired phone.....

IMEI NO..[protected]
MODLE NO...NOKIA-6300
PURCHASE DATE....10/3/2009