Disgruntled client

Today it has been 25 days since i did a payment to my sons Standard bank account from fnb and still his money has not been released. He was advised from his bank that they need confirmation of funds sent from FNB and not proof of payment from me. Standard bank has contacted him to tell him FNB has not confirmed the funds .FNB has also not contacted me to verify funds . We have been to FNB chatsworth branch and as much as they tried to help it was to no avail as the FNB contact centre is not aware of this process and i find it very *********** of FNB staff at the contact centre and ***** department to tell me they have no knowledge of such process and they cannot assist . According to Standard bank ,and my son who staff at another bank, the transactional department from one bank contacts the other bank to confirm that their client is aware of the transaction. An amount of R31397.16 may seem small to a bank but its alot of clients. How does a bank not know its own processes?. I am very disgruntled at the service received and being pushed back and forth is not how you treat clients