Hyundai Motor India — battery drain issue

Address:

Lakshmi Hyundai, backside of Metro, Kukatpally, Hyderabad 500072, 500072

I have purchased hyundai grand i10 sportz option 1.2 petrol version on august 2017. I am using the car for my daily commute to office for past two years. Exactly after two years from car battery got drained and it is not starting. How come within two years the car battery got drained off. Earlier i used the maruti suzuki alto, for me the battery came for 5 years from the manufacturing date. But hyundai car battery is getting drained off within two years. I am having even the extended warrantly, but the service center lakshmi hyundai from kutatpally, hyderabad is telling that battery won't come under the warranty. Then what is the use of taking extended warranty for the vehicle.

I need the solution for this, i need my battery to be replaced with no cost. Very worst service with hyundai, the parts are also not genuine when they are delivering the new car to the customers.