Credit card woes

I recently changed banks from Capitec to FNB in order to be able to get a credit card. About two weeks ago I app**** for a credit card online and was approved. However, besides their promise to get the credit card to you in 3 days, the FNB guys have failed horribly to assist. I have been assigned a person who I should contact to follow up yet each time I call him he either fails to pick up or promises to get in contact with me but never does. I have been to the complaints page but have had no success, can someone assist me or just switch banks?