Useless

Protea metering is a ****,especially the aomi thing where by one needs to buy credit for lights.first they dont explain thoroughly to users how this option works.secondly one will buy credit for the whole month then month end receives a bill that i am owing.how? How do we owe money whereas we have been buying credit?where does the owing come from?then when you try to get hold of them for assistance they are nowhere to be found