Unauthorised debit order deduction

On the 9/12/2020 at 14.21 p.m. I received an sms from the the African bank stating that the debit order for December will be deducted on the 11.12.2020 and if I had any questions I was to call them on ***. I didn't have the chance to read my messages at that time as I was busy at work. When I got home after 18.00 p.m. on the same day I saw the message and I made a note to call them the next morning as it was past the normal business trading hours. I called the number mentioned in the sms before 9 a.m. the next day the 10/12/2020 only to be told that the debit order was already processed at midnight. I find this totally unacceptable as I wasn't even given 24 hours to respond and I haven't given any consent for my debit order date to be changed. Further to this I did not get paid on the 11/12/2020 as the bank assumed. All the consultant could do was respond with was that she was sorry. I had to borrow this money to ensure that the debit order went through as I know that the unpaid item would have a negative impact on my credit records. I have been a loyal client who hasn't missed any repayments. Even if there was a need for the early debit surely clients should be notified at least a week in advance.