Refund Nightmare

I ordered my weekly shop on the PnP ASAP app on Sunday. Upon looking into the receipt I realized I was charged the full "prefunded" rate for my meat. I understand, that they hold the higher amount until they process at till. But for some reason, irrespective of the cost of the actual meat, they charged the higher amount. When I realized this I logged a complain on the App Chat, only to be told they could do nothing until Monday and I should check my status then. Monday I heard crickets from PnP. I opened the chat again, sent and email and took to social. Of the R179 they overcharged, they gave me R40 on Tuesday ... so again I mailed, Chatted on App and took to social ... R15 on Wednesday ... and so we go. It has been ENDLESS emails and chats to try and get them to refund me. This is COMPLETELY unacceptable, that a company like Pick n Pay can overcharge their clients and then make it THIS difficult to get a refund. The proof was supp****, the email receipt including photos of the actual meat supp**** and still no resolution. I have taken the matter to the Consumer Protector, because I simply cannot spend any more time getting Pick n Pay to refund me. I am sure they are deliberately dragging this out hoping I will go away quietly. Its simple thievery on their part. Be very very weary of the PnPASAP App, because they simply dont care about customer service and refunds are incredibly difficult to request or get processed.