MTN Charging me for an extra device and do not want to help

i took an additonal MTN contract on the 06 May 2021. The deal was for a 2 for 1 contract, i am however being charged for 2 phones instead of 1. CCI investigated and found that my application was not closed on the ILULA system even though my devices were delivered to me. its now been 5 months and i have received no help on this matter. the customer care team are pathetic and provide no help, the CCI team have been of no help. i call daily and receive no help, i would not recommend this network to anyone its the worst customer service that i have ever experienced and i have been with Vodacom and Cell c prior to this. not to mention that the systems are always down hence i have to call in a few times before i each someone who can give me another reference number.