Sony India — Mobile phone issue since purchase

Address:

Mumbai City, Maharashtra, 400007

Sony mobile xperia xa ultra graphite black, serial no: b133 purchsed from vijay sales mumbai - opera house branch.
Date of purchase 06/11/2016
First problem faced on very next day of purchase was mic, could not hear anything on call and loud speaker. Went to service centre to launch complaint but got rectified without raising service request.
After just completion of month, touch screen, heating and battery issue started which i have manged almost for two additinal month.
The only problem solved was touch screen replaced.
Now again i am facing heating, battery and network issue.
I am sony user since last 7yrs, and in future looking at the service given, would never want to buy sony again.