Double debit

Absa has done it again on the 22nd December 2023 they debit my account for the car I receive an sms stating that they are going to deduct on the 15th or I must reply with option 2 for them to deduct on the 22nd, I rep**** with option 2 the money went off my account on the 22nd, today 27th I received reversed a notification from my bank that they tried to debit again and it was returned ( not provided for) i phoned my bank to double check and they confirmed that Absa debited on the 22nd,why did Absa tried to debit again why? This will reflect negative on my credit profile and am in the process of buying a house pending second assessment, and I was charged bank charges for return debit order, will they reimburse me for their mistake, they should or else am taking this matter to my attorney, this is not the first time This time around am going to teach them a lesson they can't go in and out of my account with out my permission, I the think they'll blame their system.