I received call from unknown number stating they were going to serve me and had a warrant out for me. He said that he was from the XXXX County Courts and to call XXXX for more information. I called this number and it was to Internal Check Systems. I was told they were calling regarding a payday loan for XXXX XXXX XXXX. I advised him that this sounds like a scam since there XXXX for this company had a scam alert. XXXX yelled obscenities at me and hung up. 
I called back and asked for the manager. I was transferred to a XXXX XXXX who told me he was the owner. I asked him if he was a debt collector, why he did he not send me anything through the mail. He advised me that he did a month ago, but would not say what date. I advised him I never got anything in the mail and that this is the first they have called. I asked for him to mail this to me but he refused and said that they would sue me and go to my work or home. I told them I have paid this in full. He told me he would only give me till Monday to send him my response.