Extremely Disappointing Service

I received a message on my app yesterday around 17h00 saying that "to make things easier for me" the debit date of loan repayment with FNB has been moved to the 17th of December for the month of December to align with my early pay date. I have never missed a payment and also did not request and earlier debit date nor have I ever gotten paid on the 17th in my life. The message read that if I did not want the debit to go off on the 17th I should chat to an agent and there was a shortcut to do so. I proceeded to click on the shortcut and was "assisted" by an agent via secure chat by the name of Andrew Singh, I explained the message I received and that I didn't want my debit date this early and Andrew asked me what I was talking about completely unaware of the message that was probably sent out to multiple clients. I then proceeded to explain further and was told to come back in the morning at 8am to chat to someone in the loans department as the department only opens at 8am despite merely following the exact instructions provided in the message I received to fix something I did not request in the first place. I do work and would obviously be at work at 8am and if I am busy and do not remember to come back to the app once again I will probably be charged for an unpaid debit order on an earlier date I did not event request, this is ridiculous, its a very minor matter but its the principal and the inconvenience and total disregard to even try to assist me that has made me furious.