Nedbank just unpays debit orders

So Nedbank did it again. I have a Nedbank account I pay a monthly fee of R200.00 I ONLY use this account for 4 debit order. Last month a R90 debit order was unpaid (Charged R60) after I immediately transferred the money. This month they unpaid my Funeral policy R165.26. The account was R73.30 overdue - I immediatly went to the bank and deposited R100.00 at the ATM. The morning I saw they still proceeded to unpay my funeral policy even when there was sufficient fund in my account.