Cash Advance usa Called my job threatening I would be arrested if I did not pay $557.59 Internet

I am a teacher at the NYC public school system. While I was teaching I received a memo from my office stating "very urgent" with a phone number for me to call. When I called, no one answered. Then two minutes later a man with a Indian accent stated that three charges were fied against me on behalf of his client Cash Advance. Those charges were check fraud, theft by deception. I can't remember the third but he said these charges were felonies and I will be arrested and my job will be faxed the information. I was very nervous because I never encountered anything like this before. I know I applied for a pay day loan on line but I didn't recall this transaction. My first response was to go and pay because a threat of a felony would result in me losing my job with the Board of Education. I was panicking. I have children and can't afford to lose my job. After talking to colleagues, I began making phone calls just to find out it was a scam. These people are still calling me at work and my cell. I contacted consumer affairs, and the attorney general and after hearing what I said they said it is a scam and many people have been calling with the same or similar complaints. Also, I contacted the law firm the claimed to be representing and they said the same thing. When I calledCash Advance USA the recording has a different title. These people seem to have all my information. They even named my address and said the sheriff will be there Monday morning to take me to jail and enjoy your Christmas in jail. What can I do to stop them from calling. They are still calling. This is the second week now. I just want to be at peace. Please help.