BLOCKED DEBIT ORDER STILL GETS DEBITED!!

My wife is an ABSA client for years. She went to an Absa branch to load a debit order on 20 May 2019 to be debited. She decided to cancel the debit order on 21 May 2019, the following day. The consultant confirmed that it was blocked and send an email to HEAD OFFICE, debit orders department who confirm receipt of the request to block the debit order from going through. The money was debited on 23 May 2019 even though it was block from a branch level. My wife went to the branch today to enquire about the debit order that was to be block. The same consultant called Head Office, spoke to a lady who confirmed the query will be dealt with. It still lay on someone's desk. Not actioned YET. That puzzles me. You go on Monday to load a debit order and then asked to block it the next day and the consultant confirm that it is blocked and even send an email to head office as requested and still the debit order goes off two days later. I mean. Is that bad service or not. My wife blocked it on time and it still gets debited. I am glad I do not BANK with ABSA.