Indian Railways — cleanliness of the pillow in two tier ac coach

Train no:17026, coach: 2tier ac, pnr number:[protected]. Traveling from secunderabad to badrachalam rd. Raised the complaint to coach assistant too change the pillow as it's funny and getting stinky smell but he denied to change and suggest to put pillow covers. When we are paying more money to travel in acac coaches, expect the good quality service..