Lava Mobiles — Company default in mobile which is not repaired by company And it not replace by New mobile

Address:

Ratlam, Madhya Pradesh

I bought cdma/Gsm lava KKT31C mobile on 14/12/2013 and after that I New it that cdma messages not received it receive only after mobile switch of and on then messages get atlist 1hour then messages are stop.
I told that service center they told me it's bank miskakes but not after they told service providers problem finally after 5 month they accepeted and take it and give me after 15 days but problem still then further take and give me after 1 month but I cant take its not my mobile it is second hand other pice they not the repair factory default in my mobile and not given me new mobIle.
It create major problem when I start net banking I suffered from last 3 month by these probblems.