Complaint, need management to call me

I have been with Cell C for many years and have tried to stay calm with the terrible customer service and experience. Once again I called them this morning for assistance due to an amount been taken from my bank account yet my account was paid on the 3rd March. I requested to speak to a manager but seems this is the one company that runs without any leadership as no manager is ever available and to this day I have never been able to speak to a manager. I am waiting for a manager to call me ASAP, BUT STILL NO CALL!! I NEED THIS MATTER TO BE RESOLVED SO PLEASE CAN SOMEONE - MANAGEMENT CALL ME AS PER MY REQUEST. I AM SO SICK OF STRUGGLING WITH THE SAME COMPANY OVER AND OVER AGAIN. ONCE MY CONTRACT COMES TO AN END I WILL CANCEL AND GO TO ANOTHER NETWORK PROVIDER