Nedbank credit card - 24 to 48 hour turn around time

Nedbank credit card division made an error on my limits. IT WAS THEIR ERROR. After a chat that included mostly IRRELEVANT and INCORRECT information from them (wasting my time and demonstrating their incompetencey) they discovered their error and agreed to rectify it WITHIN THEIR 24 to 48 HOUR TURN AROUND TIME. I demanded a half an hour turn around time which I think is reasonable. They should have state of the art integrated computer systems. In today’s fast paced world how can a FINANCIAL institution expect a client to wait more than 1/2 hour? I was expected to report the error which I refused to do, insisting that the person with whom I was chatting do. She then effortlessly did this. I have screen shots of the chat which I am happy to share as well as further details. I am also posting this in my FB page to alert my 1000+ friends. Incompetence by any department of a financial institution is completely unacceptable.