Bad service for Telkom

In November 2019 I got a call from Telkom offering me a data contact. I opted for one R100 data contract. Apon delivery I got 2 SIM cards, I thought the other sim was a back up sim and I didn’t even open it. In December I got an invoice and I was billed for 2 contracts and immediately I called Telkom and I was told to call they external sales department and I did and I was told that they had to listen to the call. In January 2020 I got a call back and they confirmed that I did not ask for 2 contracts and that Telkom will cancel the additional line. Till today that line has not been cancelled instead they are telling me that I first the whole amount and then they cancel the number and I told them I am not willing to pay for for something I did not sign up for. It has been week and I am still waiting for a manager to call me back. Can anyone from Telkom call me back on *** because I just want to cancel both lines as I am fed up with Telkom and they **** network coverage.