Consumer Redressal

I have purchased a SONY XPERIA C , model no.- C2305, IMEI no. - 356534054053572 on 18th october 2013. On 25th november 2013 my phone touch screen stopped working. I went to Sony service centre on 28th nov 2013 named as NEOSA ELECTRONICS n gave my phone for repairing which was under warranty. after 2-3 days there was a call for SONY saying that my phone has a liquid damage n cannot be repaired. i asked them for other option they said me that i have to pay them 10700 for repairing. As far as i believe that water never entered since i have been using smartphones for quite sometime and i know how to handle such phones . This is a new phone launched in the market n i strongly believe that it might have technical diffuculties and which might have caused the problem. The service centre didnot want to accept fault in their product. So you tell me what shall i do now?