Free Experian Dispute Form
To dispute an item on your Experian credit report by mail, print and fill out the online dispute form, which asks for information to verify your identity and allows you to note the specific items you're disputing and why you think they are incorrect. Then mail that form to Experian at P.O. Box 4500, Allen, TX 75013.
The dispute and investigation process cannot take more than 30 to 45 days, and most investigations are completed within a few weeks. Once the credit reporting agency has completed the investigation process, it is required to provide you with written results within five business days.