Prepaid electricity Disconnection because of incorrect billing from City of Tshwane

City of Tshwane came to my house and installed prepaid electricity and this was May 2021. City of Tshwane have been charging me electricity and I called them each and every month to fix my bill. They sent someone to check if I really have prepaid electricity. 8 months later I’m still been charged electricity and no one wants to sort this out. My account is in arrears because of the electricity they charging me and they came to disconnect me. They say they don’t have a record of me having prepaid electricity but the same people who says I don’t have prepaid electricity sent people to check if I really have prepaid electricity. My question question is why send people to install prepaid and say you don’t have proof? Ain’t they report back when they done installing these prepaid electricity so that you have a record? Now I have to go to their offices and be in queue for 3 hours again just to report that I have prepaid electricity. Call centre agents says they can’t help I need to go to their offices.