Net vendor high electricity tariffs

Our complex recently changed meters to net vendor, the worst ever. Firstly the electricity cuts off with no warning because the meter is on line not in the actual house. The units that you load don’t make sense or add up. When we changed to net vendor and they where installing the new smart meters all houses in the complex where told they old meters won’t work and while they installing for two weeks. All old meters were not working and during that time we using electricity for free basically. After the two when they where done installing my electricity bill came to R800 which didn’t make sense and today there’s no explanation to the high electricity bill for all Midriver estate residents in Kempton park .