Myself and my neighbor have received calls from this number. The female on the line asked if you wanted the interest on your MasterCard lowered and wanted the card number. When told she could not have the number she asked if we had a Visa Card and did it begin with a 4. When she could not get information requested she hung up. She spoke with an accent which was not clearly understandable. We are fairly sure it is a scam to get your credit card information, but have been unable to get a name or address for the number 407-000-9999.