Incorrect debit order date

Good day

I have noticed that my debit order for this month didn’t go off on the correct date (last day of the month) instead it went of on the 25th which caused it to bounce, can you kindly set the debit order date to the last day of the month, so that we don’t have such occurances in the future, I did however make payment manually but I’m still receiving sms’s saying I need to make a payment and that my debit order will go off early this month as well, can you kindly check if the payment was received by Old Mutual (I used my account number as a reference) and also can we also ensure that the debit order date is set for the last day of the month, I have tried calling in several times but I struggled to get through, I understand that with the lockdown there’s limited staff.