This number is part of a scam going around the United States. Don't even talk to them. If it keeps up, contact your state's Attorney Generals office. Make sure to give them each number that has called you. All 50 Attorney Generals are very much aware of this scam. If you have any other questions, please go to http://www.ic3.gov/media/default.aspx.
They keep calling and calling. I myself have filed several complaints with anyone and everyone. I know that these people have to know we are on to them but won't give up. I realize it's a scam and I owe nothing never have but it's so annoying. Over and over again. Will they ever just stop