COCT reaping us off account ***

I received my billing for May and got a shock of my life the total for the month was R4 751, I called on the 25 April 2018 and logged an escalation as I know we're attempting to save water in the property. This comes after receiving a letter from the COCT saying they couldn't do a meter reading because there's items blocking the meter, which was a blatant lie, I'm still awaiting the manager to call me, I went through an exercise of monitoring the water meter reading before going to sleep and early morning to trace if there is a leak and there was no change over night in the reading, the invoice included 2 months water reading in excess of 37 kj which is impossible!.