Sony India — Sony Xperia Z1 issue (Customer care are useless)

I have serous issue with Sony mobile policy and the service . I bought Sony Xperia Z1 in july 2014 . Phone is good, Working fine . Suddenly in january 2015 i gor squirting sound from vibration (vibration moter was faulty) i went to sony customer care in Pune, Bund garden road . After showing my phone to them they said your phone looses all warranty, I was shocked and asked for the reson .. they told that inside charging flap there is "litmus" kind of paper that paper turned into red color, that means water goes inside my phone and thats the resne for a hardware damage. I stunned and after checking my phones other 3 flaps all litmus indicators are white and only one indicator turned red. They are not accepting my phone in a warranty. I told them with a calm voice If i have throw my phone in water then all litmus indicators should turn red, not only one...still they denied to accept my phone in warranty... i will appeal in a consumer court regarding this issue . My phone doesn't have any issue instead od vibration sound, how can they said that i put my phone in a water without closing charging flaps ...Damn .. frustrating...i need justis