Hide The Manufacturing Year

I Sirajul Haq,I purchase Hero Xtrem Sports on 08/09/2016 from Cynosure Manik’s Auto Center(Hero Authorised Dealar)The sales person did’t inform that my Bike Manufacturing year 2015. I received Smart Card from Barasat Motor Vehicle on 24/01/2017, In smart Card The Manufacturing
year is 2015.
The same day visit the Dealership also for regarding problem on Manufacturing year.
They inform me that is not a big problem also they said that it Hero Motocorp not disclose the manufacturing year.

I want to take immediate solution from your site.

Thanks And Regards
Sirajul Islam
7687938369