Nokia/ 5130 xpressmusic
My phone is consistantly giving me troubles

Hello sir,

My nokia 5130 xpressmusic is giving me troubles consistently,

my phone is IN WARRANTY period,

first it was not starting but after i contacted Nokia care (22/10), they sent my handset to delhi centre and it tool 10-11 days to repair (returned on 2/11), but after 5 days it is again giving me problems of restarting again and again ..

i have purchased Nokia brand by its good will but now its getting worse ..what are the conditions on which they can replace my handset?

ps HELP!