Credit reports typically have a space for you to provide your comments at the bottom: explaining why a particular debt hasn't been paid or to point out any factual errors. While this is another area of recourse, with the credit bureaus you're seen as guilty until proven innocent, and the burden's on you to correct things. When you write to the credit bureau, be sure to send copies (not the originals) of any proof that can be used.
Write a letter to the specific credit reporting agency that shows the falsehood, whether it is Experian, Equifax, or TransUnion. Explain the mistake and include a copy of the highlighted report along with your documentation. Although certain bureaus now let you submit disputes online, it’s not a bad idea to send this letter by certified mail, and keep a copy for yourself. The reporting agency has 30 days from the receipt of your letter to respond. The Federal Trade Commission provides advice on contacting the credit bureaus about discrepancies. Here are the contact numbers and web sites for the three credit bureaus: