Rex Enterprise — fraud and touching for money

Hello sir I am a middle class student on 19 step.2019 same companys person calling me and offer for the job but they are not saying about that agreement and that lady said me write your first name on blank and they not even give me time to read that.after that I told that lady i don't want work &she was also agreed for that but next day she doesn't received my call and not respond for anything .and after I found they all are fraud and i block him.after 4 month they are continuously trying to call me, demanding me for the amount which is 1lakh plzz help me sir ..I am from middle class family ..i don't have anything ...help me sir