Minn. Stat. § 237.155: CREDIT FOR INCORRECT DIRECTORY ASSISTANCE.

A local exchange carrier that provides directory assistance to customers for a fee, either directly or by contracting with a third party, must provide for an immediate credit to a customer that informs the directory assistance provider that the provider has given the customer incorrect information for which the provider charged the customer a fee. A local exchange carrier must notify its customers of the right to the immediate credit for incorrect directory assistance. The notice must be in a writing labeled "NOTICE OF RIGHT TO INCORRECT DIRECTORY ASSISTANCE CREDIT." The notice must be given to a new customer within 45 days of commencing service and at least annually thereafter and the notification print must be of sufficient size to be clearly legible.