Listed on Credit Bereau for a Cellphone contract that I've never had!

I am very disappointed in Cell C. I got listed on Credit Bureau for the cellphone contract that I’ve never had. I have complained several times on HelloPeter (15th & 22nd December 2022) Please refer back to these complaints. I am not getting any call or feedback from anyone. An incorrect cellphone was delivered after 30 days of waiting. I complained and the cellphone was taken back. Cell C is now claiming or demanding money for something that I’ve never had. Please refer to complains logged on the 15th and 22nd December 2022. No one is willingly to help me regarding this matter. Now I have been listed on credit bureau for a cellphone contract that I’ve never had. I am unable to push forward because of the bad name that Cell C have created on me. Today I called to get this matter resolved, and the call was picked by George Mkhize (call centre agent), he couldn't assist me. I then requested to speak to the manager and the manager by the name of Kea Moono refused to take my call. Can anyone please take this matter seriously as it is affecting my life negatively now. I need this matter to be resolved asap. Can I be called urgently on ***.