Online payment INTEGRATION ERROR TOOK R11616,48 X 2 R23 232,96

Tried to pay my account via there online payment system on Friday 28th May with my credit card, twice, approved transaction through phone app, once done was taken to a page saying INTEGRATION ERROR - ACCESS TO THIS RESOURCE IS RESTRICTED. Called Vodacom business and after being transferred to 7 different departments was advised me to do EFT to company (Vodacom) as it would reflect immediately. Paid R11 616,48... That payment is reflecting. I logged onto my business credit card banking today to see that that transaction also went through. I immediately called Vodacom today whom told me there was NOTHING that they could do unless I sent them POP for Credit Card transaction as they do not accept the statement I had just emailed; *** . She wants a proof of payment just for that transaction which she says is the only way their accounts department will even look at this issue. Well VODACOM it is impossible on a credit card transaction to get a POP!!! NOW WHAT, I am down R11 616,48, I don't have time to sit on the phone all day fighting to get my money back, which by the way was set aside to pay rent for my business!