Sony India — Xperia m4 aqua mic and camera doesn't work

Address:	560017
Website:	support.sonymobile.com/in/contactUs

Bought an xperia m4 aqua 5 months back. Gave heating issues from the very next day (Thought they will be fixed with the update but it never got fixed). Two months o[censored]sage and the rear camera is gone (Gives camera error on opening the app). Now even mic doesn't work during calls.
Had complained it on company website and through mail but no response. Got as an automated response from sony india stating "we will endeavor to respond to your query within next 48 hours" but they never came back.
Its been more than 2 working weeks since i've raised this issue, all i got as a response is to do a software repair myself that too after describing in brief that i've already tried that one out. Never expected such a careless and unprofessional behavior.

After digging on their forum (Which is full of similar cpmlaints), its pretty clear that this camera and mic problems are in the whole xperia m4 aqua manufacturing lot and are not being taken care seriously by sony. I dont want to get stuck in the never ending cycle of giving phone for repairs multiple times as they already did to few customers who reported the same.