Onida — igo ace 23" display problem

I BROUGHT IGO ACE 23" LED TV ON FEB'2013, IN APRIL 2015 THERE IS A WHITE SHADE IN DISPLAY, I CALL CUSTOMER CARE 3 TIMES THEY GIVE COMPLIANT NO [protected], TECHNICIAN TELLING DISPLAY NOT AVAILABLE. I CAN SELL THE TV IN 1200INR APPROX. IF THERE IS PROBLEM WITH THE MODEL(SPARE NOT AVAILABLE) THEN ONIDA SHOULD REPLACE THE MODEL. 2ND THING THE TV NOT LAST LONG PICTURE QUALITY IS GOOD BUT LIFE IS LESS. COMPANY SHOULD TELL CUSTOMER TO EXTEND WARRANTY. I SPEND 14300 FOR THIS TV. PLEASE HELP AND SUGGEST.