Bad Service from Eskom Customer Care Department

I have registered various complaints to Eskom Customer Service regarding the payment of a invoice for electricity used on a un occupied farm. The reference numbers given by Eskom Cutomer Care are ********** 50 and ********** 12. No feedback is given to our complaints. The account holder received a invoice during December 2017 for a total value of . We are disputing this because the account holder does not live on the farm but in an old age home since September 2016. The electricity supply to the farm was disconnected by Eskom on request from the account holder during September 2016 and the acount was fully paid..The farm is still not used or occupied. I have tried to get hold of Eskom CEO (Acting) but nobody is willing to give his email address. It seems that Eskom is now a secret organisation and that nobody is allowed to escalate a problem to management. Why are Eskom management scare to provide their contact information.