Shocking customer service

I logged a complaint with Absa on the 3rd of Jan 2020 ( reference C-***6), I immediately received an auto response email that they will make contact within 8 business hours. I was really not expecting to be contacted within that time period – if was after all just after the festive season and they probably had quite a few complaints to get through. I only received an email response, on the 8th of Jan. Actually I received in a very short time 3 emails from them acknowledging the complaint and that they are investigating. The responses were from Nicolene Mfene and Dorathea Swanepoel from Complaints Administration. One email even said that they would provide feedback by the 15th of Jan at 11:09 (!!), but needless to say no one has even contacted me with any feedback. So Absa, what does one really have to do to get any response from you??! This lack of response from ABSA is disappointing, extremely unprofessional but unfortunately, not uncommon to their clients.