Contact the child-support enforcement agency in your state. The names of these agencies vary by state, but start by consulting the department of family and children's services or the department of human resources in your state. Provide them with any documentation indicating that the child-support debt is inaccurate. If they indicate that the information is indeed inaccurate, get a written statement from them. If the information is older than seven years, obtain a letter from the agency indicating the age of the debt.
Appeal the child-support amount if the child-support enforcement agency in your state cannot or will not help you. Each state has appeals procedures for child-support arrears. You may need to file an administrative appeal through the child-support enforcement agency, or you may need to appeal to the court in the county in which the original child-support order was issued. The child-support enforcement agency can tell you about the appeals process in your state. You may need to hire an attorney to maximize your chances for success in your appeal.
Order a copy of your credit report from all three credit reporting bureaus. You are permitted to obtain one free credit report each year. If you have already gotten a free report, you will need to pay for a report at the websites of Experian, Transunion and Equifax. Different bureaus may report slightly different information, and the child- support arrears may not appear on each bureau's report.
Fill out a dispute form on the website of each agency that is reporting the erroneous information. Provide any documentation you have from the child-support enforcement agency indicating that the debt does not exist or is too old to be reported. It can take up to 30 days to have the information removed from your credit report.