Driver threatening with false allegations what can I do?

I hired a driver from a local driver center. I did not know that he lost his license earlier and came to me to trick me in a situation to demand huge money from me by claiming that I took his license in the middle of the road. He came at first with his gang of friends in front of my house and insulted me and my old mother very much. I told them that I did not took his license, requested him to go to police station repeatedly and told them to stop those abusive. One night he came with huge people nd they all started to threaten me to death. I informed police and Local Police and removed them.