Electricity Bill gone wrong/Protea Metering

We have been staying at Midknight valencia since 2014 and our electricity bill has been okay/ manageable now recently they have added electricity and water on the same bill and they are double charging us. We bought electricity on the 26 June for R700 and by the 6/7 June it was finished we then bought again for R700 and last week Wednesday or Tueday it was finished, my husband then bought again or R600 today they sent sms saying we owe them R20. then they cut electricity. I bought for R150 today the 18 june 2019 and they deducted R20.00, at 12.31 today i received an sms saying that your smart meter account at unit... has been disconnected due to no credit. How can we not have credit i just bought electricity at 10.12. Their system is not working and they are taking our money and worst part this is pre-paid and we cant even see the units we have we just get sms's from them. Protea metering is robbing people and when you call and ask what is going on they are very rude and impatient. We want to move out from this flat ( Midknight valencia) but they are telling us that we cant move because we will forfeit our deposit because our contract is only going to end 30 Sep 2019. We even requested the bill the lady i was speaking to was like no you will get it later, they don't even care.

Someone please help us we want to move out but we want our deposit and we cant even stay long because this electricity bill in ridiculous.

I think the more you stay at this flat the more they over charge you.