Mohan Motor Distributors Private Limited — audi approved run away with our money and shop is closed

Address:

33, New Alipore Rd, Durgapur Colony, Block G, New Alipore, Kolkata, West Bengal 700053, Kolkata, West Bengal, 700053

Audi approved has ask for advance of 50000 to block certified audi a6, which was transfer on 27th of june 2018, as per the commitment car is certified and in good condition. When i have seen the car condition looks worst and we have requested for return, which was promised by audi representative (Suman) within a week however till now it was not refunded and they have closed the shop.
Can you please help us in getting out money back.