Sony India — Phone heating pblm, voice low while talking, usb cap get loose every 3 months

Address:	400009
Website:	www.sony.co.in

I'm using Sony Z2 phone from last 1 yr & I've come across many problems in the phone, I've given this phone in the service center and this is my 4th visit in last 1 yr.
Currently the phone has heating problem, voice of the opposite person is too low while talking, the USB cap has been change before and now again it became loose and came out.
I've got a sony Z3+ plus 2 months back for my wife and a sony R56C TV a week back that means I really like the brand and been loyal towards it.
However I'm very disappointed with sony Z2 and I'm requesting a replacement for this. I'll pay whatever is the adjustment amount if required. Hoping for some positive reply. Job No. W[protected]