Micromax — Mobile get hanged, volume low, video stops in between, apps keeps on loading.

Address:

Pune, Maharashtra, 411048

I have purchased Micromax A315 Canvas 4 Plus white gold Imei [protected]
wide invoice no.13059 dt. 4th, may 2015. initially their was problem of low volume and video stoppage, but gradually problem kept multiplying as unnecessary apps kept on loading to block the memory space. resulting in mobile to get hanged. I tried to reformat it twice but to no avail. As i stay at pune city an don't have service station of Micromax nearby. hence facing problem. kindly help.