Missing payment to FNB

I did a payment from my Discovery Bank account on the 24th of December 2024 to my FNB Credit card account. Unfortunately I used the incorrect account number for my FNB credit card account. I have been on about 10 calls per bank, notifying them of the situation and following up. The incorrect bank account number that was used does not exist (as per my fnb follow up call) but the money never bounced back. If I didn't follow up with each bank, I would not hear from them. Discovery blames FNB and FNB blames Discovery. How can money just disappear? There are numerous procedures and services in place for situations like this. It's the 30th of January 2025, more than a month and there is no resolution, no urgency? A lot of money is just in the air and I have been patient, but I have officially run out of being nice and understanding. This is an extremely frustrating situation and nobody seems to want to make effort to search for the money. I can't keep liaising between banks, are they not suppose to communicate with each other while investigating this case? This is extremely poor and unprofessional.