150 No. 15 of 2009] InfOrmation and Communication Technologies Provided that the Authority shall, where it rejects any tariffs proposed by a licensee, give the licensee the reasons for the rejection. (5) A licensee shall, upon approval of the tariffs by the Authority publish the tariffs at the licensee's own expense in at least two daily news-papers of general circulation in Zambia at least seven days prior to their introduction; and provide all its electronic communications services in accordance with the tariffs approved by the Authority. A licensee shall not alter or vary any tariffs without the prior written approval of the Authority. The Authority shall maintain a register of approved tariffs which shall be open for public inspection on such terms and conditions as the Authority may determine. The Authority may carry out reviews of the tariffs so as to ensure that the tariffs conform to the provisions of this section. A licensee shall, in relation to the electronic communications services provided to the public, provide detailed billing information to enable the consumers to verify whether or not they have been billed correctly. Tariffs for services offered by licencee holding dominant position 48. (1) A licensee that holds a dominant position in a retail electronic communications market shall, in relation to the electronic communications market— submit to the Authority for its prior approval, the tariffs it intends to charge to the public for each electronic communications service, together with a detailed justification for the tariffs; and shall not apply the tariffs until the tariffs are approved by the Authority in accordance with subsection (2). Subject to subsection (4), the Authority shall issue a written decision approving or disapproving the tariffs submitted under subsection (1), together with the reasons for the decision, within thirty days of the receipt of the submission for approval. The Authority shall base its decision under subsection (2) on the extent to which the tariffs proposed by a licensee-