WHAT MUST YOU DO TO GET FEEDBACK/RESPONSE???

I posted a complaint about Standard bank on Hello Peter on the 3rd of November.To date I have not had any feedback or response from them yet.I called their complaints resolution center on the 6th of November and spoke to Amanda Mnothoza who said she is busy with another query and will call me back as soon as she is done which she never did.I called her back on the 9th of November and every day after that and left numerous voice messages for her to call me back but to no avail.I even tried another extension yesterday and I asked the guy if Amanda is at work and he said yes ,I then asked him if she is seated at HER desk and he said yes so then why is she avoiding me???I also sent her an email and left a message with the guy I spoke to yesterday and he assured me that he WILL MAKE SURE that he gets the message to call me but still to no avail.IS THIS COMMON PRACTICE AT STANDARD BANK???