Experian, TransUnion, or Equifax and explain what happened to your card. To speak to Equifax, call 1-888-766-0008 or visit this page. To contact Experian, call 1-888-397-3742 or go here for a fraud alert or here for a credit freeze. For TransUnion, the phone number is 1-800-680-7289; the fraud-alert link is here and the credit-freeze link is here. The bureau you called will place the fraud alert with the other two bureaus as well. Every 90 days, renew the fraud alert until you are confident that the situation is resolved. Be prepared for this to last several years.