Nedbank Personal loans are Sharks

I went to Nedbank Vaalmall on 07/01/2023 to change my Personal Loan Debit order date from the last day of the month to the 1st of the month. The lady at the bank called the Call Centre to do the change for me as I never received a D/O date confirmation SMS. The call center agent did the change but informed me the change was done but that the D/O for January will still run on the 31st. After that it will be from the 01/03/2023 forward, We asked if this was confirmed. I then received a confirmation sms later that day for this change. My D/O went of on the 31/01/2023 and then again on 01/02/2023..... I contacted nedbank contact center and requested a reversal as I CAN NOT afford to pay a double deduction on my salary. They lady assisted me in getting the payment reversed. Today the Personal Loan department called and threatened me with canceling my insurance because I reversed my un-lawful deduction. Please note.. the next deduction will be LESS than 30 days later on 01/03/2023, But according to NEDBANK I am in arrears because I requested my money back, BEFORE a full month have passed between payments. Just brilliant how you threaten a person with a deduction date of less than 30 days between payments I have now had to get money to pay this and as per the sms I received, they want the next deduction payment also. So to state, I borrowed Monet 16/12/2022, first deduction date was 31/01/2023 so next one would have been 28/02/2023.... at what time was I in arrears.. still trying to compute that .... ANYONE!!!!