Where does the buck stop?

What a terrible experience having to deal with these profiteers. My bill has suddenly jumped from R307 pm to R1013 pm, putting my account in arrears and NO one can explain why. I have called the customer care line who can't assist and then transferred me to accounts who says its a billing problem who the transferred me to online center who the ALSO cant help me as said I should email my query to ********** What an excruciating experience!