Unauthorized debit orders - being double debited in a month

Kindly note my current home loan requirements are that my debit order go off on the 01st of every month.

After having a payment holiday during the lockdown period, I was informed that I couldn't extend the payment holiday and made provisions to ensure I had funds for my debit order to go off.

On the 01st August 2020, I was debited an amount of R855. 52: Ref ABSAHLOAN/***NAEDO DR 1;

I have just viewed my banking app and I see that Absa tried debiting me again on the 07th August 2050 which was not agreed to.

Due to not having funds and not being notified of being debited twice in a month, my app says I am currently in arrears for my bond as the debit rejected.

This is totally unacceptable.

Please can this be rectified as soon as possible as I should not be held liable for a mistake the bank has made!!