Apple India — home button not working within 2 month of purchase iphone 6s

Address: 411015

Hello team
I purchased iphone 6s after a month my home button was not working so i visited to service centre after they kept phone around 7 days they told me that its not repairable and u have to purchase new phone with same cost within a month they are lying that its not in warranty.

What should i do now its disappointing experience with apple