Consumer Redressal

My new SONY Xperia Z phone screen is broken, while the phone was in my pocket. There is no external damage to the phone. Sony expects me now pay Rs.22000 and exchange my handset with a new handset. Because they do not have capability yet to fix these phones. I have tried at all levels for the past 3.5 months for someone in Sony to help me out and charge me an amount which commensurate to the cost of screen. Comparable phones with other brands get repaired at Rs. 6000 to 7000. There is no response from sony. I request you to please take up my case and help me out of this. I have paid Rs39000 for this phone and I am not able to use it. Thanks Sandeep