Over charged and bad service

I have been over charged with electricity, according to them I have spent R369 in less than a week, When I query it, I am not given straight answer, I got an sms stating that I am left with R22.00, The following day i got a notification saying that I have a negative of R169.00 which till today< I still don't understand how they came about that.I then called them( 28 Jan 2022) they moved me from one person to the other, the last person I spoke to was Ashley promising me that he she will call me back, cause what shes seeing on the system it does not make sense, she did not all, I followed up with a call on Tuesday , it was the said she is in a meeting she will call me back, then no call from her still, I called again yesterday which was a Wednesday I spoke to Patience, she said she is on lunch she will call me back, till this day, she is still calling back,.

I recharged with R500 on Friday ( 28 January 2022) as I type this, I am left with less than R200, meaning in less than a week I consume R200 electricity. I am leaving alone,the gyser is always off, I cook or twice a week,