Sony India — electronic

Hi we bought kdl-43950d android tv in january from a sony dealer vinod electronics in chittoor; while we are watching tv we have seen slight difference in display wethought might it's a problem with setup box we contacted them they said it's a tv problem then contacted sony servicecentre they took pics of tv and we have to change panel; when we were buying they tell us we dont get any problem it's the best company if bychance you face a problem we replace newtv but now they arent replacing please resolve this issue