(d) frequency co-ordination; (e) technical aspects of the public communications services; and (f) damage to or interference with an operator's equipment, network, or services by another licensee. (2) The Commission shall have the power to hear and settle any disputes between a licensee and a subscriber or a class of subscribers, including (a) allegations of undue discrimination by a licensee in respect of unauthorized charges or terms for the provision of a communications service; and (b) allegations of unauthorized or high charges levied by a licensee. (3) The exercise of the power conferred to the Commission by paragraph (2) of this regulation shall be contingent upon a determination by the Commission that a subscriber or a class of subscribers have first made a reasonable effort to resolve the complaint through the approved complaints and claims handling procedure provided for the licensee. (4) The decision of the Commission rendered pursuant to this regulation shall, within 15 days, be entered in the register of the Commission and communicated to all the parties to the dispute. (5) The decision of the Commission in a dispute shall be binding on the parties and, where a contract or agreement exists between the parties, such a decision shall have the effect of an addendum to the contract or agreement. (6) Any person aggrieved by the decision of the Commission made under this regulation may appeal to the Tribunal within 15 days of the date of the decision of the Commission. 20