Please advise !

I am 54 years old and divorced earlier, What I am writing here is not to be judged but for advice. 3 months ago, I and my son travelled to a city using the services of travel services and the person who was driving the cab told us that he owns the cab and that he was doing this as a part-time. This guy even after dropping us would call me for some reason or the other ask me for help in getting a better job and try to talk me into meeting him, I used his cab services for a couple of times. I am not sure what happened he somehow managed to get me married to him, On the first day itself after the marriage, I suddenly realised that he was married already and that his wife knew what he was doing, when I heard him talk to her and tell her that this lady has none to look after her, I can do that and in return get a lot of money from her and that she wants to take me overseas, when I had not told him all that. I just asked him to leave. Now he started calling me saying he wants money and that if I take him overseas, he would come and stay with me. I had already told him I want nothing to do with him, and I told him that this will be annulled and has no meaning. Is there a way other than the police help to talk sense into this guy.