Complaint Review: Ace Cash Services

I have received many emails all claiming to be the same people different email addresses  (all using Gmail or yahoo), all claiming I owe different amounts and all claiming they will prosecute. I engaged in conversation to find out more from one of the people and they had an old bank accounts information,  my social security number, my place of employment, and several previous addresses of mine. Yes, it kind of scares me since I know I have NEVER taken out a loan with Ace or any of it subsidiaries. Also, supposedly I took these loans out in Aug 2012. I didn't receive any loans in 2012 and why wait 2 years to start making contact if I did? I am to my Witts end with it and want to prosecute them for harassment.