Nokia 5300 — i have not get back my mobile from last 2 months.

To,
nokia care,
i have purchased my mobile on 12-12-07 from haridwar. suddenly it stop working on 25-06-08. i reached to the nokia service center, they asked me that i'll get my mobile back with in 10 days. but till today i.e. till 04-09-08 i have not get back my set back. when i call nokia care center they cannot give any satisfactory answer to me. they call me there everyday there as service center is too far from my house, it is not possible for me to reach everyday there. but when i reached there they said that you will get your mobile tomorrow. i m getting tired to run everythere from last 2 months. they said that they give me an exchange unit (SWAP). they called me on 02-09-08, when i reached there on 02-09-08 i found that exchange unit cannot worked. it is automatically switches off. please tell me if replaced set is creating so much problem than what i's guarantee that it work properly in future. don't irritate me or force me to move to customer forum or to take any legal action against company.
thakyou
manjul