The three U.S. consumer credit-reporting agencies are TransUnion, Experian and Equifax. Credit-reporting agencies keep a record of consumer credit history. Creditors will update a debtors payment history once per month. You can contact the credit-reporting agencies using several methods. The method you use will depend on your reason for contacting that agency. Sometimes credit-reporting agencies are contacted to dispute items on a credit report. People also contact credit-reporting agencies to get copies of their credit report. Instructions ...