FNB ******ion

I made an immediate deposit from my Capitec to my FNB at 23.14 on the 5th July to have sufficient funds im my FNB account for my debit orders on the 6th July. I made sure after the immediate deposit that the funds were available, and it was. There FNB returns my debit orders unpaid due to insufficient funds. This smells like an FNB ******ion because there is +/- R105 charge for each debit order returned. Need to make the investors happy!! Unacceptable!