Prepaid electricity units

Today at 16:37 I went to pnp express bp olivedale and I asked the cashier if they sell city power prepaid electricity, she said yes and I went on to ask her 3 times to verify as I know sometimes shop attendants view elecyricity units as the same not taking into accouny varying service providers. She confirmed to say yes I then gave her my meter number a d asked her if it's showing my name she responded to say it's not but it's normal as others don't show and others Do, I went on to say to her please double chack and don't make a mistske she responded its correct one. I even askec her to see a previous slil of city of joburg electrity witb meter number

She went on to process payment and when she printed prepaid receipt as I thought it was incorrect and I said I told you hence I asked she pointed to me that her system doesn't give her option she just entered meter number.i asked to speak to manager to exsin and also highlight the fact that I had asked not once or twice and she didn't bother to double check but rather just went on to do things that she was unsure. I asked that they refund nd as this eskom doesn't not work with city power, the manager gave me long story and eventually went to call eskom to check as he himself was telling me same that city of joburg and eskom use same. I stood in the store bp express for close to 45 mind whilst they figure out who should refund me and eventually put me on a call with eskom even though I had told them am a city power customer. In all this I was not refunded my money let all e helped cause of a mistake their teller made and not mine I asked to say give me a refund as I don't have money to buy another voucher....they actually said they can't.

So now am totally unconvinced due to their incompetence and so lost money as am unable to use the stupid voucher I was sold by their people and have nerve to tell me I must contact city power