1. Demand that the credit bureau verify the information; and
2. See if the creditor is listed in the phone book.
Also, the contact information may be provided by a different credit bureau than the one whose report you are looking at. You can get all three, once per year, for free at http://www.annualcreditreport.com/ . (You don't have to buy anything, although the site will attempt to convince you to purchase your credit score.)

