Continuous incorrect billing of account

The City of Johanneburg continue to bill my moms account incorrectly.<br> <br> She has a pre-paid electricity meter that was installed by them, yet they continue to bill her every month.<br> <br> City of Johannesburg ***<br> <br> She has escalated this Account more than three times already.<br> <br> We have been to Braamfontein more than 6 times.<br> The account has been on pre-paid since the 29th of September 2015 but they keep on crediting her account with electricity charges.<br> I have asked for all these charges to be reversed since September yet I keep getting credit Invoices.<br> I am unemployed and cannot keep travelling up and down to your office and spend money calling your call center, yet nothing is being done to rectify my account.<br> She is highly frustrated and is now seeking legal advice and will go to the media to get assistance.<br> Please can you urgently rectify this account. She using pre-paid electricity , please reverse all charges on this account from September 2015.<br> <br> Atheniah Pietersen<br> Landline: +11 ***<br>