Poor service

I app**** for a credit card with Standard bank in September 2020. I was provisionally approved. At the same I app**** for a Nedbank credit card. Within a week I received the Nedbank credit card. I received numerous messages to submit my documents to process the application, I kept mailing them to the email addresses provided and still have received no feedback. I received a few calls from Market SA who were handlying the application on behalf of Standard Bank, sent them the documentation and still nothing! About a month ago I received two calls from Market SA regarding my id document, I sent that through and still nothing, I was told by Market SA that my application was successful and I was approved. To date I have received nothing. When I called the call centre a week ago I was told there was no application on their system????? How is this possible. I have been a standard bank customer for years and do not expect this kind of poor service. I am not even a customer of Nedbank but have received excellent service.