Impossible to get proof of payment.

I requested a proof of payment from FNB for a payment made with a virtual card by tapping my phone (it is for a third party to proof that payment was made to a supplier). I was told that it is not possible to issue me with the proof of payment and that I would have to use my bank statement as proof of payment. I had a similar request in December and then I was sent the proof without any issues. When I pointed this out to the secure chat person, I was first told again that they could not supply the proof. After pointing out the discrepancy again, I was assured that the document would be sent within 2 to 3 business days. That was on 5 Feb, it is now 14 Feb. The banking industry keeps on warning us against unsafe practices and encouraging us to use services like virtual cards, but then they not only make your life difficult and fail to deliver on such a simple request as a proof of payment, but they even suggest I send my full bank statement to someone just to proof payment. How is it possible that a bank cannot supply you with a document to proof that you made a payment?! And no…you cannot get this on the app…not if you used the virtual card by tapping your phone. So just a warning…if you are going to need to proof that you made a payment, do not use your virtual card on your phone and also do not expect the bank to be of any assistance.