Credit card declined but no reasons provided

Good morning,<br> <br> On 1st June I app**** for a credit card. Dayleen ***** asked me to send through my documents, of which I did.<br> After spending sometime with her on the phone, she told me that the application was declined because they might be a possible listing on the credit bureau. I asked which one but she could not tell me. I then contact XDS, Experian and Transunion to find out about this listing. All three could not pick up any listing on my name.<br> <br> I then sent her an email asking her to provide me with the reasons in writing why I was declined. I sent the mail on 5th June 2015, and to date, she has not responded or acknowledged my e-mail.<br> <br> Can someone please provide me with reasons please. How does one fix the problems that may have been picked up by Standard Bank that I am not aware of, when your employees are not willing to provide such information?<br> <br> <br>