Discovery Bank - impossible to talk to anyone at their call center

I have tried several times today to get through to the Discovery Bank call center with no success. I eventually chose option 1 where the consultant will call you back by 21:00. Well it's 20:40 and still no call from the consultant. I cannot believe that a company as big as Discovery cannot answer calls and having clients to hang on the line for up to 10 minutes where you just end the call out of frustration not to mention wasting your airtime because of the gross incompetence of Discovery Banks call center. I am really disappointed with the service received by Discovery and the nature of my call was just an enquiry but what if it was a real emergency and you cannot get through to anybody at the call center. I would like to challenge Discovery and ask them how do they intend to retain clients when they have such a pathetic call center and how are they going to improve on reducing turnaround times on calls to the call center.