What is the warranty on Deltic Drixx?

Service at the showroom is disgusting. During buying they told deltic drixx will run 80-85 km on one charge. But after 5 months it is running 65 km per charge. When i went to showroom to see the matter. They are now saying it happens, it will decrease 10 kilometers in one year. And actually it is decreased by 20 kilometers in only 5 months. Deltic company is fooling people. Please don't buy this company's scooter. Please go for branded companies like hero and honda etc.