Audi India — Complaint against audi jammu

Address:

Audi jammu

Sir,
I purchased an audi q3 2018 model last year in march 2019 from audi jammu. I have completed all the payment and got the sales letter and registration done. i also got insurance renewed last month. Now its been one year the company is not giving me original RC on pretext of that i have not completed the payment.
Sir if i had not completed the payment how come they gave me the sales in my name and got the vehicle registered with RTO.
Sir it is a humble request to take action against them
Thank you.