Gati cargo mover - Car Transport

Gati cargo mover have approached me for transporting my Car Bangalore to Visakhapatnam and they have spoke to me that the amount will be **** and not more than that. After i have given them the vehicle on **/**/** they have come with fake GST bill and asking me to make payment and only then the vehicle will be delivered and currently vehicle has been stopped somewhere in middle of these both cities. Even i did say that payment will be made at the time of delivery whereas i have already made a payment of **** and remaining **** is pending to be made. Now they are coming up rudely and not sure where my vehicle is.