Neddbank call centre staff have gone k o o k o o

I phone nedbank call centre this morning as I have just received my new credit cards and AMEX - to advise advise them that yes I have my cards and thank you very much - all good with my cards however all the correspondence I am receiving from Nedbank regarding ONLY the credit cards be it via SMS, telephone, post - it is all addressed to Mr Natalie. Like W T H???? I have all my bank accounts with Nedbank, my personal loan with Nedbank, my car with Nedbank and have had it so for over 15 years and last time I checked I am a Miss Natalie. Your call centre advises me their supervisor says I have to go into a branch with a letter confirming I am a woman. Has Nedbank gone I n s a n e? Because one of your call centre staff made an error when typing my name in and instead of typing Miss Natalie Toi they typed in Mr - I now need to prove I am a female???. Has Nedbank lost their mind? Rectify this immediately please!