FNB Klipfontein Witbank ATM not accepting deposit

I just went to FNB, Klipfontein, Witbank to deposit money in for one of my suppliers that I needed the item urgently. The ATM accepted only half the notes and rejected the other half and returned some of the money. It displayed the option to retry and accept the other half of the notes. It accepted the whole amount and gave me the print out "YOUR CASH DEPOSIT WAS UNSUCCESSFUL". The consultants informed that I must fill in a form and wait until the money had cleared. This affects my business and prevents me from supplying the school that needs this amplifier for there sport day tomorrow! Thanks FNB for the worst ATM's in South Africa that cant's event accept South African money