Amaron — bike battery problem

Address:

Amravati, Maharashtra, 444807

I bought a new bike bajaj v15 on 2 month ago.
In that bike amaron battery is in
But before 15 day battery not working properly. I went to the showroom and gave complaint for battery but showroom owner demand me 200 rs for replacement of battery. This is ridiculous because tha battery is in a warranty period.
How does he demand me a money???
Kindly plz take the action on that owner
I'm giving my name and that showroom address below in this msg.
Plz take the action quickly.

Showroom address.
Om motors
Near cotton market
Amravati road
Paratwada
444806

Regards
Akshay nagdive
Paratwada
Mo. [protected]