Loans dept

Monday 20 Sept did not debit their loan instalment from my fnb account as per usual so I called in the next day to find out why. Call centre agent said their system auto changed my banking details without my knowledge. He then suggested I do a manual transfer in which I did right after I got off the phone. Yesterday 23 Sept I received money in my capitec account and Capitec decided to debit again. I called in immediately to have them reverse it and they said it would take up to an hour. Nothing was reversed. I was then given the collections depts number. I called in this morning 24 Sept only to be told it would take 24 hours. I am livid because I need my money urgently. I now have to pay for something that is not even my fault. I’m disgusted at how pathetic your accounts/ collections dept is run. Because of your mistake I now have to suffer.