Maruti Suzuki India — booking car not delivery

Address:

Birbhum, West Bengal

Sir, i want to exchange my old swift dezire to new switf dezire. And booked a new swift dezire car on 13.11.2017 from sainath auto link private limited, bolpur. Name of saller mr. Rajib sekh. And booking amount rs 11000/= at the time of booking they told me your old car value rs 395000/=and registration no wb54m 5913 after completing my all documents they told me your car value rs only 330000, and they told me cancel booking. Plz help to refund my booking amount