[Resolved]  Skoda India — Skoda rapid battery/warranty

Address:

Bulandshahr, Uttar Pradesh, 431005

I own a skoda rapid since 2014. I bought it with a three year extended warranty. Today my car wasn't starting. I sent my car to the service centre. They told me the battery has worn out. But they also told me that "battery is not covered in the warranty". I want to know is it true that skoda doesn't cover battery in the warranty?
Also isn't it too early for a skoda bettery to worn out. Given the fact that it has been just 3 years.