Property sold

For the last 3 months I have received an estimated reading from ESKOM for my monthly account. The reading for July was very high if compared to the previous few months. I have been asking ESKOM to send someone to do an actual reading at my property. I have logged 11 queries using the email facility. I always receive an automated response acknowledging receipt of the mail, and a few days later another automated response sincerely apologising for inconvenience caused. I have also received one response saying that an actual reading would be done at the end of the month and another to say that the actual reading has been done and that the account is pending I have now sold the property and am concerned that this issue will delay the selling process and am even considering just paying the account to get rid of the problem. Don't know what to do now