Extremely expensive electricity and terrible customer service

Extremely expensive electricity. Statements do not reflect the correct amount tenants are charged per unit or kW. When I calculate it, we are being charged triple the amount of the City of Joburg tariff. They use smart meters, but still manually adjust your meter reading at the end of the month so its like you are charged double. Terrible service when you try to contact them, they are unable to explain their billing. Your account will have a positive balance, and the smart meter will be deducting as normal. Then they adjust your account, take all your money and cut your electricity. Stss feels like a ****.