The got a call from this number that just plays a message when answered.  There is no human on the other end, a computer call with a message recording.  This is a fraud debt collector harassing people who even have no financial issues.

Got a call from this number 847-257-8337. Called the number back and they wouldn't identify where they were calling from. Kept saying his name was Mario. Since I don't know a Mario, I hung up.

A couple of days ago, I reported a number from this same people to the national do not call, and now they are calling my house from this number, I know that this are the same people, bcause they are asking for the same person wich is not Me, and the person they are calling for doesn't live here at My house. The people that call here all the time, go by the name of NCO Financial System, and I have never done any buisness with no one by that name, please help me with this matter if you can?.