Billing querie

I requested to be moved to a upper floor due to noise in the building of which it was a struggle for them to move me until the 10th of july of which i had paid 4950 for the unit then i was moved as per request when my bill came it said im owing 4750 and on the app its said the opposite. I paid 4100 because i had quiried my bill because on the app it said im owing 299 for maintaince and 75 rands for fumigation of wch i never requested any of the services. Hence i paid 4100 and my balance is 650 but they have switched of my electricity without any notice and the querie for billing has not been solved i feel ****** because im only owing 654.04 not this that im seeing on my app i feel like im being subortaged because my quirie wasnts responded to and already they are switching of the lights. They are taking advantage of my situation.