Does this qualify as mental torture

Hi. I need some advice on my situation. In January 2016, I met a guy through relatives it was kind of an arrange marriage situation. We spoke for almost 1&1/2years. He has been living in California since the day after when I first meet him. He was very good to me and had helped me financially when he was with me, he always agreed on supporting me financially as I had bad situation last year. I always use to appreciate it and told him that I would pay him back as soon as I could. He always said it's ok, pay back whenever I could. There was no timeline discussed on the repayment. Things dint go as planned and the relationship was called off. Even when he wrote the last mail to me he mentioned that there is no rush, to pay the money whenever I could. Since then his father has been following up on the payment, through texts to which I have been replying that I will pay him back as soon as I could. Now he has been calling me and my mother and is being very abusive,he threathened my mother that he will pursue this legally. My mother has not been involved in this at all and they had known this. He is calling my mother to just torture her. Also when I borrowed money or he lend me the money our parents were not part of the discussion. Now the guy is just mummm he doesn't respond or react to my mails and texts or calls. Please suggest. I will be paying them soon but don't know what to do at the moment. There is no point talking to his father as he doesn't listen and abuses.