No follow up

I was phoned recently by an agent telling me that because I am a platinum account holder I qualify for a credit card. After doing a credit check I was told that I qualified for a certain limit which I accepted. The whole process took quite a while as I was read all the terms and conditions, etc. I was then asked to forward a copy of my ID and bank statements for the past 3 months which I did the following day. I was told that my card would be delivered within 3 to 5 days. Since then I received no response. I telephoned again today only to be told that although my documents have been received they now require further documents from me. This is extremely poor as firstly FNB contacted me originally, told me my card was approved, and requested the relevant documents. Why now are there suddenly more requirements. At the end of the day, I left Nedbank to join FNB 2 years ago, and am seriously sorry that I ever did this and am considering going back to Nedbank ASAP.