Tvs Motor Company — Registration certificate of my bike is not given to me from showroom dealer

Address:

713130

I have purchased a tvs super xl heavy duty on 03.03.2016 from showroom name - choudhuri automobiles, katwa, bardhaman, wb-713130. I have paid all money to the deler in cash. When i asked to the owner of the showroom he give me reply that he will give me the registration certificate within 15 days. It has been over near about 1year 3month.
But still now deler did not give me the registration certificate for my bike.
Model - tvs motor super xl,
Chases no/engine no. - md621bd12g3a19867/odipf1740755,
Vehicle registration no. - wb42ag7164,
Date of purchase - 03.03.2016,
Contact no. - [protected],
Email id - [protected]@gmail.com,

Please do the needful action for this.
Regards,
Nikhil mahanta