Asus India — Asus zenfone 2 poor product quality and service repair

Address: Mumbai City, Maharashtra, 400088

I had purchased "asus zenfone 2 " mobile on 10th august 2015. After purchasing it i have visited thrice to the service center for the same board(Hardware) issue till march. Now again same problem has arise in my mobile phone as on 24th april and i have to visit again.

Their quality of service and repair is not up to the mark. My request is to replace the handset, because the same issue is going to arise in future again and again, and i have to waste my money to visit service center to get it repaired.
Kindly look into my matter promptly.