Asus India — Warranty not covering

Address: Bangalore, Karnataka, 560026

I have bought asus zenphone 2 mobile on 10/10/2016 as per me i should have one year warranty coverage up to 10/10/2017. But when i submitted to service center they are saying this is out of warranty on 15/05/2017. Kindly find the invoice copy.
Below mail from customer service

Dear
Valued customer,
!! Greetings!!

As per activation date 7-oct-15 unit is out of warranty.

Thanks & regards,
Pavithra vincy a| co-ordinator | f1 info solutions & services private limited.
Saleh center, before sigma mall, behind executive chamber, cunningham road, bangalore - 560027. Tel +[protected]/70
E - mail : [protected]@f1infoservices.com | website:www.f1infoservices.com.