Immediate Payment Nightmare

A immediate payment from FNB was made to my Capitec account on Thursday 2 Sept 2021. After numerous calls, I was told on Saturday 4 Sept 2021, that Capitec had an problem with immediate payments from other banks. That the money will be sent back to the sender by latest Monday 6 Sept 2021. Its Monday, and still nothing is reflecting in the senders account. The sender states that FNB is claiming the Money is with Capitec. We are not getting any direct answers. Why was the money sent back to the sender? And if so, where is the proof. Because if Capitec states the money was sent back, and FNB says the money is with Capitec. Where the HELL is the money then? It has been 5 days already.