Rude and Dismissive Service

i am a resident at san ridge heights. my average utilities consumption had a threshold of 600, i complained that now i had to buy R400 extra for utilities in a period of less than 30 days. My sister and I contacted the myutility people who were dry in their response to our mails. Our question was simple-Please make us understand why we had to pay so much if there is no increase in our consumption. The manager Mecheline Brits responded in a very rude way and sent us a lengthy spreadsheet telling us its "self explanatory" . There is a very poor customer service and the my utility service delays in loading electricity and accurately displaying accurate funds. And the people who are supposed to assist us are dismissive and have no desire to assist customers with their grievances.