The Mobile Store — dosn't slove my prblm

Address:

Thane, Maharashtra

i hav a nokia lumia 520 i got network prblm in moble i was given my mbl to the nearst the moble store they give me my mbl back in almost 45 days. my prblm was slove bt i got new prblm which was phone on or off automatically they said the prblm was in baterry i was purchase new battery from nokia store bt prblm dosnt slove then i can give my mbl back to the moble store on 20 may 2015 they said mbl will come in one week bt mbl isn't come yet