Exorbitant electricity bill from Delucia body Corporate

I have Delucia properties as a body corporate and for the last 3 if not 4 years I have been querying my electricity bill and nothing much happens. I get charged exorbitant amounts and get a " there must be a problem with your meter". I live with my kid, we leave home just after 6 and come back after 6 PM almoat daily. I dont use my electricity that much and yet every year in June it goes up by over a thousand rand and nobody can really explain why. They tell me that's what my.meter read or my usage and I know it is a lie as they just divide the electricity usage by number of units and sizes. My bill went up by over R2000 since July. I was traveling which I do a lot in November and just came back to an electricity bill that more than October. I got a credit note and just over R1000 was taken out but no one can explain why I was charged that much in the first place and why I am still paying more than I did last month. I'm so sick of this, if anyone can recommend where to go to lay a formal complaint, please do that! They're clearly ripping us off.