Phone to offer me something and then never come back to me

ABSA Bank phoned me and offered me a Increase on my Premier Credit Card. After finalising the application i recieved a sms stating it was approved. It is now 2 weeks later and nothing has happened. When i phoned i was told that there is nothing on the system and different departments deal with it, even some private outsourced sales companies. So they could not advise me of anything. Just a perfect example of proper useless service