AC performance in Xcent big problem.

1. Purchased 2014, August at Advait Hyundai, BG road. Experience not good. Charged 4000 extra for getting number. Sold to me telling all new features. 2. Driving comfort is very good 3. Looks good, Rear seat is better than other cars in the same class 4. AC is not good. The gas refilled many times. It works only a few months. During the summer, it's bad. The fuel economy falls rapidly. The authorized service centre at Mysore is very bad ( past 2 years using in Mysore). Trying to take help from TVS service, but not very good. Past two months using without AC (due to COVID-19) no service available. 5. Both fuel economy bad and service cost is higher.