Asus India — I am complaining about asus zenfone 2 sim slot problem

I am facing the problem regarding SIM slots of my mobile. My mobile does not detect the SIM and even if it does then also for very short time. I have this problem since last few months. I had also given it to the service centre. After 15 days of repair it again started as previous. It also disturbs my call many times. It always gives me a pop-up saying "Please install SIM 2 or 1". My mobile is in warranty. Asus has provided me a defective piece and I am repenting for choosing Asus. Please take action as early as possible. If possible, replace my cell with new one as this happens very often.