Asus — Asus zenfone touch screen issue

Address: 380013

Website: www.asus.com/in

I have purchased asus zenfone 2 laser from flip - kart and after three month there is issue in touch screen and thair service center person replace screen and its working properly for three month and now there is same issue and now thair service center person tell its water damage and he show me one white spot but i dont know from where its come and its not under cover warranty its mother board is damaged and its needs to be replace and its cost is 9072 inr. And new phone cost is 8999 inr so thet what can i do. So please give me resolution and i am facing this same issue since i purchase this phone so i need replacement