Nedbank Home Loans deduct installments too early without my authorization and double deducted installment in December 2025

Nedbank Home loans (NHL) deducted the December 2025 instalment much earlier than the normal debit order date. I specifically emailed *** from NHLs on 10 Dec 2025 with this message: "I received a sms on 14 Nov 2025 from *** apparently from Nedbank Home loans with my account number ending with 584501. The sms states that the December 2025 bond repayment will go off on 12 Dec 2025 to match my salary date. There is an option on this sms number to sms back opt out. I tried to reply but the message does not go through or get delivered to the stated number. For the record, please note there will not be monies in the nominated bank account on 12/12/2025 and the normal deduction date is to be adhered to for the home loan repayment amount." Despite this instruction NHL deducted the instalment on 13 /12/2025 and then again on 19/12/2025. The normal dt order date is 28th of each month. This is unacceptable and I request NHL to refund me the overpayment immediately. In future, the debit order should remain 28th of each month. There is no need to contact me for change in debit orde date as this is my instructions until the bond i paid off.