I have been recieving calls from this number for over a month. They call private or sometimes the caller ID says 000-000-000 or they will scramble the number. I just pick up the phone and yell for them to stop calling my phone. They will call my job and and family members homes telling them I owe them money. I have never been told what I owe and to whom I owe it to. So on Apr.3 2012 at 4:40pm I decided to call them back at the number they left on my voicemail and spoke to someone named Greg Peterson. I was told to give them my "reference number." I asked him to mail me documents concerning the debt I owe. He wanted me to give him my personal info such as home address, SS number and DOB and I refused. I told him that since he has my number(by the way I don't how he got it) then he should be able to track my address down. They previously made threats to serve me papers at home before which led me to believe that they had my address. I asked them to just serve me the papers and I want the calls to stop. They did stop for a day and they was right back at it. Today is Apr.6 2012 and I just received another call from a new number but it is still Check Managment Group. So I called them back and spoke to Mr. Mitchell (who sounded exactly like Greg peterson for some strange reason haha) but this time they did not ask me to give them a "refrence number" he knew exactly who I was. I asked him to stop calling me and I did inform him that I was recording the call and saving my phone log for proof of harrassment. I asked him to serve me with the summons and that I don't wish to resolve anything with him at this time. He kept refusing stating that I could resolve the issue without going to court. I told him that I would rather go to court because maybe that way I could see the "proof" that I owe this debt. Then I asked him for his name again and what exactly is his title and I wanted all of the information about the company that he works for. He hung up the phone on me! LOL!! I will do this everytime they call me...it was so much fun making them sweat for once. Oh and I had already did my research beforehand so I already knew they are full of crap and was trying to scam me out of money.