Debit Order not deducted

So I took a loan to fund my business with Woolies,

I have been paying nicly without issues.

The issues came when I change my banking details, I informed Woolies and provided them with the Proof of Banking, they didn't update, I called their call Centre and waited for more that 30 minutes to be assisted. Consultant did a verification and she said she has updated the banking details. Only to find that they did not, I emails their *** and the this lady called Awethu Hlati Customer Contact Centre said it has been updated but still its not updated, Now I need to pay manually, Who would remember to pay Debit Orders manually, Woolies wants to tannish my credit record. I am really struggling with these people I don't know what to do anymore