Upgrade procedures

Recently I requested a product upgrade on my Discovery Credit Card. The relevant documents as requested was returned with my application which was declined as there was insufficient documents to proceed with the upgrade.<br> <br> I am self employed and have the credit card for over 10 years. The payments are made timeously and the full account settled in less than 30 days.<br> <br> Could not believe the arrogance of the staff who declined the application as I do not feel the application was evaluated on the the track records and maintenance thereof.<br>