Unauthorised Credit Card debit order

I approved a debi-check for the minimum instalment due on my absa premium credit card every month. Due to unforeseen circumstances my card was incorrectly billed by a third party which resulted in an overdue amount. I’ve contacted Absa telling them to debit the minimum as usual and I will then top up to help bring the account up to date- this was arranged and I was happy.

However without fail this month they debited R4072 on the 3rd of the month & add their discretion. I don't care that the account was overdue - I made the necessary arrangements for with the bank so that everything is seamless. I did not authorise them to debit this R4072.

I called Absa this morning and in a space of 20mins I spoke to 5 different people VERY VERY RUDE and unprofessional, I was transfered from pillar to post and no solution. It’s as though the staff doesn’t work for the same company..they all told me different stories and it’s pathetic. I’ve been with Absa since 2015 but after this I am tempted to close my account with ABSA. This is my money & ABSA have no right to do as they please with my money. I want this debit order to be reversed and the agreed amount to be debited as agreed.