Sony India — xperia x stopped working

Address: Chennai, Tamil Nadu, 600100

I have a xperia x mobile.. After fees days of warranty, it downloaded update file was asking me to install.. As soon as i installed it, the cam stopped working. So took to service center at adyar. Paid 3.5k as service charge for fixing the fault.. After a month it pushed another update which i didn't install for a while. Few days later it restarts itself and when i took the mobile to service center they said, there is a problem with the mother board which will take 17, 000 to replace.

Very much fed up with the quality of sony.