Ex-boyfriend took my money and won't return it. How do I move forward?

Dear Love Guru, First of all, I want to stay pretty anonymous. Secondly, it feels weird to discuss it with an unknown individual and never did I in my wildest dream thought that I would be seeking an advice. However, here I am...  The story starts when I met this individual in the UAE who is originally from UP, Saharanpur. This guy initially tried to get closer to me as much as he could and once he succeeded by becoming my close one, we just hit off pretty well. It went to point of engagement Roka. I wasn't there in India for Roka. It happened with him, his family and my parents. Everything was dreamy and nice until he started changing his behaviour towards my parents and then me, he was abusing me with money. He put me into credit card debts. I was feeling horrible. I started to revoke his access to my card, my everything, and I decided to call it a quit. In return when he understood that I am going to dump him he played his cards. As he couldn't find any cheating in my case when I was with him he decided to dig my past and started torturing me. He created a story to humiliate me at the work place and in front of people. He turned the tables by stating that I'm not dumping him rather he is. It was so heartbreaking for me. I left my job I left my life in the UAE all coz of this guy. And now after 2 months he is keeping an eye on me through to social media. Also he is trying to contact me by asking how I am. I don't understand what he wants and I am unable to recover.  Seeking your help.  Thanks. 

I was in a relationship with a boy who was my classmate. While we are in a relationship he get physical with other girls and when i comfort him he physically abused me and he use verbal and physical abuse against me when ever i ask question about girls and his behavior. Now i did breakup with him but he was blackmailing by calling my father and threatening me that he will come to my home and show the pictures of us while we are in relation and he told my mother about our relation and emotionally blackmailing me