So I get a call from my dad today, he said that they just got a call and drug dealers have my sister and they are gonna kill her if I don't pay them $600 that I owe them. It all started that my sister got a call from a Chicago number saying that they were the Chicago police and that me and my dad were in a fatal car accident so they needed my moms number. My sister gave them my moms number and they called her and said that I was driving a drug dealers car and crashed it and they have my sister and they are gonna kill her if my parents don't pay them the $600 that I owe them. I called my sister and she was safe at her friends house, I rushed to pick her up while my dad called the police. We have no idea of how they knew my family enough to know how we were related.