Selling for Collateral advice



I am not sure, the category which I have selected is the right one or not. As we run a company which helps in visa processing for Europe and other countries in Delhi. So one client didn’t have the money to give us at the time while processing his documents so he kept his Honda Activa, scooter as collateral against 55k for our service’s including the RC of the scooter. Now, whenever we are calling him he saying i will come tomorrow or next week from past few months. We have all his text conversation and everything with us. Now he is not even replying to us

Now we are fed up we want to settle the matter by selling the scooter. How we can sell legally as he will not show up for the signature of scooter for selling. we will be glad, if you anyone can guide us in this scenario