Prepaid electricity ****

I purchased electricity from the Pick n Pay Express Fiveways SS on the 7th of a July 2022 at 17:29, the teller assisting me was Stella Stephen. I have since not been able to load the voucher and I am now sitting without electricity. When I call the ***customer care line no one is able/willing to assist me! I want a refund or a new voucher for the same amount of money! I refuse to be ****med out of money.