Poor work ethic and customer service

I have been struggling to get hold with Eskom accounts centre for more than 2 months now.One lady rep**** after 2 weeks when I asked about my account being so high and the meter readings being wrong she did not come back.Now they just expect me to pay 30k without fixing a fault that was obviously at their side.One could clearly see on my aacount when you go into it that we have never used that much electricity.How can it jump fro 2500kwph to 7300kwph in 1 month and then return to normal .If someone can please contact me back I have send countless emails from beginning of July to Maky,Thapelo and Mpho at the Klersdorp branch but none of them came back,even after they received an email from Ruth still nothing.