ACS INC Sent me 3 emails last week and called my place of work today threatening to have me arrested next Monday New York New York

Received 3 emails from this company last week. After receiving the 1st email I called the number and a man with an Indian accent answered and told me I had borrowed money and stated an account was used to borrow money in June 2013 that has been closed for 2+ years. When I told him this he didn't know what to say and hung up. He then forwarded the same email to me 2 more times the same day.

Today I received a phone call at my work and when I asked if I could have copies of paperwork or asked what company this was from I was told I had to listen to something. When I refused he got mad and told me that he would have authorities come to my workplace next Monday.