Sony India — Got company defected phone

Address:	Rajkot, Gujarat, 360003
Website:	Sony

I have bought a phone sony xperia m4 aqua dual 16gb black. Now i found that this phone doesn't work well.
Its gps is not working.
It is heating at very unacceptable level.
Phone is also too much lagging at every time.
This is completely company defected phone.
When i was going to its service center, they kept my phone for a day, but still my phone doesn't working well.
Now i don't trust on sony, i just want my money back.
I don't want to use this defective product more.
I want my money back.