Internal Dispute Resolutions on behalf of Cash Net USA Check Fraud, Unpaid Debt, etc. Internet

Left a voice message saying her name was Linda Lawson calling from the fraud department. But didn’t say the name of where they’re from. Just “fraud department”. Called them back, said I owe $900 for some loan I never paid back from 2013 and demanded immediate payment. I called back & spoke to a Mr. Nielson (sp) he told me before they pressed charges that I need to resolve this.  I told him to send me something in writing & he got very upset.  I told him no, and we went back & forth. He said it was from CashNetUsa, which I did take a loan out & paid off. I called CashNetUsa & they stated that my account was already taken care of & I didn't owe anyone money.  I called the company that originally called me back & gave him a piece of my mind. Then he proceeded to say that I don't understand his jobs & statistically an average person takes out several loans in months. I told him that I called the loan place & he said it had nothing to do with them & they were going to prosecute & it's going to cost my thousands. I told him to do what he had to do but to stop harassing me & my employer. Sad thing is, this guy sounded like a normally joe shmoe.