XXXX weeks ago I got a phone call from a collection agency and I asked them nicely not to call my work. The following week he called my job again and left a message for me to call him. I called him back and told him the exact thing I said the week before. Yesterday I receieved a message at work from my boss that a lady called me and I did n't have time to call her. Today she called me again and gave me the same reference number as the man gave me. I asked her not to call my work. I am not allowed personal calls then she threatened to serve me papers at work if I did not call XXXX Ref # XXXX and speak to them. I called the number and ended up getting in a screaming match with the man because I felt like he would n't prove to me the paper work that was sent to him from the original collector. He was very rude and threatened me with turning me into the check card place to have me arrested. I was not saying I would n't pay what I owe I just wanted prove. I did offer him {$500.00} to clear the debt today and at XXXX he said yes. He put me on hold and came back with {$670.00} today and I told him I did n't have it. So thats when I wanted prove of all the paper work they had. They are claiming I owe {$1500.00} for Fifth 3rd Bank from 2012. I told them I needed to contact the bank first to see why I owed this and he got very angry so I hung up on him.