Refund

I requested services from ikeja and paid the R850 for installation and monthly payment, however that did not happen as ikeja technicians told me something about plugs in the house not being compatible , they offered services that I would need to pay extra FOR and I told them i'm fine I would therefore request a refund, the guy sent communication via WhatsApp before leaving my house, and took my account number, that was the 13th of April, to this day I have not received my money. WhatsApp agents are useless, they close the ticket before you can even state your case. I called , spoke to a lady by the name of Sam, she told me they got the wrong account number when processing payment, but when I asked her to confirm the account number it was the correct one, I gave the same account number to the technicians in my house and many times on WhatsApp so this cannot be the case, I told her this and she said they will communicate with payment and process, its over 48 hours again and I have not received my money and to me its clear that this refund is not being processed because why all this back and forth ? I requested and paid for a service that was not rendered , can I please get my R850 back? I can never just donate, R850.