Shocking service & unacceptable turnaround time

I visited Nedbank Carlswald on 28 Mar to conduct all my banking requirements. One of the items was to amend my overdraft. It is now 6 days later and I am still waiting for my contract. According to Nedbank Head Office it is just to sad and to bad they have a capacity constraint for more than a month now and all customers need to be ok with waiting weeks up to months for changes to be app****. How on earth can Nedbank Head Office expect customers to accept this as a response? We don't live in the dark ages anymore, stuff happen in minutes & hours - not days, weeks & months! Please don't make your problems that of your customers, it is not acceptable. Nedbank has known about their capacity constraints for more than a month now and have done absolutely nothing except for penalising their customers! Really!??? is that the best you can do to solve a problem?