Incorrect charge from July 14 STILL not rectified

I've spoken to your accounts department numerous times regarding the incorrect charge of approx. R2500.00 billed to me in July 2014, to be told that it will be reversed. It's been 10 months and nothing has been done about it. <br> The accounts department states that 29000 people were billed incorrectly and that it will take time to rectify, which is understandable but 10 months? Furthermore, when the error is on your side, why do we, the consumer, have to be faced with threatening messages on our statement? <br> The fault is not on MY side - the monthly charges are paid every month without fail. The fault is on YOUR billing system<br> Please do not tell me to go in to a service centre to rectify this - neither me or my husband has the time to do it, neither do I want to talk to any of the staff for them to tell me to be patient and wait for it to be corrected. I need someone of authority with 2 brain cells to contact me to let me know when this will be rectified.