What's happened to Nedbank?

A lady consultant called from +27 ********** 00 to tell me that my small business account will be closed within 14 days - ( this account is approx 21 years old ) - because "we cannot keep lending you money if we are not sure that you are still operating". She speaks so indistinctly that most of it sounds like a ****. I gave her an e-mail address and to date I have not received any response. What to do ? I would hate a surprise such as she is threatening ? I had to provide my ID#, and hope this does not lead to future complications. Has Nedbank employed untrained novices just to harass and annoy customers ?