The first respondent, Econet Wireless, appealed to the Fiscal Appeal Court against a decision by the second respondent, ZIMRA, imposing retrospective customs duty of US$15.8 million and a 300% penalty of US$47.6 million on the importation of base station components from 2009 to 2013. In the course of its appeal, Econet sought to call evidence from the first appellant, Netone Cellular, and its Managing Director (second appellant, Reward Kangai) to establish that ZIMRA was treating it in a discriminatory fashion compared to Netone's imports from 1998 to 2013. The Fiscal Appeal Court registrar issued a subpoena duces tecum requiring Kangai to testify and produce documents relating to customs duty on Netone's imported base stations. The appellants applied to set aside the subpoena, arguing it was invasive, oppressive, and too generalised. The Fiscal Appeal Court dismissed the application, finding the documents were relevant to establishing whether ZIMRA had acted discriminatorily. The appellants then appealed to the Supreme Court. At the hearing, the first respondent raised a preliminary point that the subpoena was purely administrative and interlocutory in nature, requiring leave to appeal under section 11 of the Fiscal Appeal Court Act read with section 43(2)(d) of the High Court Act, which had not been obtained.