Mental harrassment

Hello sir I am 4th year student persuing law . The main issue over here is there is one boy lot elder than me I treated him like a big brother and he is married. One day that boy sister called me up and asked me to go somewhere because he will be alone and for giving him any sort of company they asked me and the sisters was going for the her date. They even said that not to bring anyone or tell anyone about this plan I felt awkward and I asked one of my friend about this plan she was ready to go with us. Eventually we went over there and clicked some photos where he put his arm around me I was standing straight via crossing my hands there was no touch from my side. We came home and after a month of this scenario his wife called me up and abuses me a lot I tried to explain her that there was nothing sort of I treated him as a brother from first day than also she said bad things to me I tried my best to resolve the problem and during those time my viva was going on and I was not able to focus on my studies. Next day what happened was she called me and said that the vechile we went by was her and she purchased that vechile and she asked me to bring 2500 or else she will come to my house and will create scene . I'm really worried about this cause this will led down my character and there is assassination of my character and she even tell me that she will call me on women cell . So what I really want to say is that in what bases she will call me on women cell . Can I do something can I file any cases on my behalf .