12 GCA § 13104: Appeal From Agency Action.

(a) If an agency statement is adverse to a customer, the customer may file an appeal with the Commission within thirty (30) days of the issuance of the agency statement. The Commission shall have jurisdiction to resolve the dispute. During the pendency of said appeal, no action adverse to the customer with respect to the disputed amount may be undertaken. An appeal pursuant to this Section shall operate as a stay.

(b) If the agency’s determination is reversed by the Commis-sion, then the Commission shall require the agency to make an adjustment of account, including a credit, return of any deposit payment or a portion thereof. The remedies contained in this section are not exclusive, and the customer may, at the customer’s sole option, proceed under this Section, proceed pursuant to Article 2 of Chapter 4, Title 7, Guam Code Annotated, or may pursue any other remedies available.

(c) Advance notice of a proposed filing for change of rates or tariffs by a utility must be filed not less than one hundred twenty (120) days prior to the filing of the application and not more than one hundred fifty (150) days prior to such filing.