Maruti Suzuki India — Refund still not received

I have previously booked a car in Maruti suzuki showroom ( Varun motors- ECIL, Secunderabad).
The salesperson name is Satish Kumar.
Because the vehicle was taking so much time to deliver, I have decided to cancel my booking and the concerned person said that it will be processed in 10 days. I had paid a booking amount of ₹5000. I have asked for a refund on Nov 11th 2021. Today it's January 4th 2022. Still the salesperson says it will be processed in a week.