Nedbank is unprofessional

Last week Friday I app**** for a Young professionals account. The agent did all the checks and told me I was approved. she told me a banker would come to me to sign for the account. I even double checked with her on this and she told me I just had to wait for that banker to come to me to sign as I'm approved. So yesterday I decided to follow up as it has been days without any feedback. I queried on twitter and imagine they couldn't see my application and I had to ask them to check the phone call records to prove that I app**** and was approved! (This happened around 12am.. they frustrated me around midnight imagine!) They told me they located the calls and will get their team to investigate and advise further. Today morning someone calls me and tells me as per credit bureau I was approved because my credit score is good but their credit department decided to decline me. 1 - no one sent me a reference number on this application 2 - the agent said I was approved & just had to wait for the banker to come to me 3 - when I followed up, they had a hard time locating my application. 4 - no one had the decency to tell me that they decided to decline me 5 - one of the excuses was that some agent was not at work (BS) 6 - I ASKED for a detailed application decline reason and timeline and why they decided to decline me when I was waiting for this damn account card ! Who does that ? Please make me understand why she assured me that the process is done and I'm approved but they later decide I'm not approved within the space of a few days and no communication back to me.