Consumer Redressal

i faced the problem(auto reboot, overheating, charging problem etc..)in my samsung note-2 mobile..worst of among all problems i have faced that my mobile backcover laminated sheet burned due to over heating of my handset. i have been complaining for 1 year bt they were temporarily fixing the problem, now atlast they have told me that water is logged inside my handset n this condition is not covered under warranty.. i know this is not possible,they are jst fixing there fault on me.. You can imagine the overheating problem was so severe that it burned the thin transparent sheet of backcover so samsung logo has disappeared with it. I have extented my mobile warranty before expiry date.