Refund on wrong billing

I have queried billing @ customer Service in 2018 @ Rivonia branch in Johannesburg and was bluntly turned away and the lady refused to log a call. I again had a billing issue on 11 July 2019, and went to the same centre and again the lady refused to log the call, yet she said she did it. I persued and on 26 July people from billing Paul and Nikita interrogated me and said I have to pay bill. I app**** for pre-paid and was denied until I settled account. On 31 July a technician was sent to my home, and found that the billing since 2017 that I was billed was for another home. I had paid in excess of 10000kw, and this could have been resolved if customer service Eskom was customer focused and not so adamant that they cannot assist.