Spice Mobile Phones — replacement of mobile

i had purchased a mobile of spice company model number M5252 on 18.07.2009 from jhansi and the IMEI number of handset are this:-

1)[protected]
2)[protected]
3) M5252P6902206

and after the one month of purchasing i am continuously facing the problems i am also comlain to your jhansi service center but they are not solve my problem the comlain date is 18/11/09 they are loded a soft ware also but the is at it is same and at this time and i gave my mobile to your service center but they are not return my mobile so please solve my provlem.