#Black Friday Bad Customer service

Cell C allowed a *****ulent upgrade on my cell phone contract. On 5 October 2023, someone upgraded my contract with cell c without my permission. That person received the cell phone and cell c is charging me for it. I have tried since October 2023 to date for cell c to cancel this contract. I have lodged a ***** case with Saps and have forwarded the relevant documents to the ***** department as well as to Beatrice, a supervisor in the customer care department.. I have contacted cell c almost daily and left messages for Beatrice, who does not return my calls. Today I received a bill from cell that is R1300 instead of the almost R600 I paid. Cell c is not interested in resolving this matter and does not care. The ***** department does not answer their calls, so who must I liaise with!!!