Electronic and Postal Communications (Tariffs) G.N. No. 421 (contd) Decision of the Authority on proposed tariff 9.-(1) The Authority may approve or reject an application for review of tariffs for regulated services. (2) The Authority may reject an application for the review of tariffs if it is of the view that the proposed tariffs are unjustifiable, unfair or unreasonable. (3) A decision of the Authority rejecting a proposed tariff shall(a) be in writing; (b) state the reason for rejection; and (c) be made available to the service licensee. (4) Where the Authority approves the new tariff, a licensee shall inform its customers of the new tariff by publishing the new tariff in the public media in English and Kiswahili one week before coming into effect. (5) Where the Authority and a licensee fail to reach agreement on the proposed tariff and counter proposal, the Authority may make decision on the proposed tariff basing on the best information available. Appeal 10.-(1) Where a licensee is not satisfied with the decision of the Authority pursuant to regulation 9, he may within thirty days appeal to the Fair Competition Tribunal. (2) The licensee who fails to lodge an appeal against the decision of the Authority within thirty days from the date of decision shall be deemed to have accepted the decision of the Authority. Investigation of tariffs 11.-(1) The Authority may on its own motion or pursuant to a complaint made under this regulation, investigate any tariff set by a licensee. (2) A complaint about tariff brought under subregulation (1) shall(a) be in writing; (b) specify the name and address of the complainant ; (c) state the interest of the complainant; and 88