[Resolved]  Nokia 6300 — repeated auto switch off and contact service problem

hello nokia...
i purchased nokia 6300 handset with IMEI ([protected]) on about july 2008 from ankleshwar, gujarat. it worked smoothly for 3 months. but then in december, my earphone attachment pin was ruined. i repaired it in chetak sales nokia care in anand, gujarat.
then again in january their was a problem of auto switch off. so again i went 4 nokia care, anand.they returned my phone 2 days later saying it was a software problem.
1 month later again the same problem was repeated and they again flashed the phone and returned 2 me. but this time it worked 4 not more than 4 days. so they said they would be sending it to company. i received my phone after about a month. but again it worked for 10 days and got ruined.
this time i have given it in nokia care, bharuch i.e khushi communications. and they said they wud be sending to the company.
i m now fruistated with this kind of aftersale service of nokia. please thoroughly check in the problems of my handset and reccomend it 4 replacement. bcoz if the problem is not solved now, i wud follow the proceedings by taking all the jobsheets to the respective authorities and lodge a heavy complain on nokia.