Extremely disappointing and unsatisfactory service from ABSA

Extremely disappointing and unsatisfactory service from ABSA. My payment date changed 2 months ago. I then went to ABSA Zewenwacht branch 2 months ago to change my debit dates from the 28th of the month, to the 29th of the month. I then explained this to a consultant who first tried to do it on her computer, but failed. She then asked for assistance from her colleague who told her that she cannot do it and I would have to call through to the call centre. I then did this and successfully changed the dates of my debits. I then received a call on 04.10.18 saying that I've missed two payments of my loan agreement. The caller could not tell me why this is the case and she did not know how it could've happened. I then asked her to get someone to call me who can answer that question. Today 05.10.18, someone calls me back apologising for the mixup and tried to arrange for me to make the full payment. I didn't manage to get the young woman's name (this is my fault). The phone signal of the phone call was not very good, when I advised her to confirm the amount I was happy for them to deduct from my account today, the phone cut. She failed to call me back. This call was at 11:39 from ********** . I gave it 10 mins for her to call me back, but I received no callback. I then tried calling the number, but the number just rings with no answer. This is extremely poor customer service. I am now held liable for missed payments caused by the branch, not myself, and am having to chase up something that ABSA doesn't seem to know fully about. They cannot tell me what had happened. I've been an ABSA client all my life, and although they're not the cheapest, I remained loyal because they have their house in order...Based on this fiasco, it doesn't seem like they do. I will definitely be exploring my options with looking for a different bank, and also looking into making a formal complaint at the Financial Ombudsman. - Please contact me so that we can get this problem that YOU caused, resolved.