Standard bank customer service

I have changed my email address at more than 3 occasions in the bank the last couple of years. I have done it at Amersfoort branch before they closed the branch and then again in Volksrust on 2 occasions. I receive all the marketing but have not received any bank statements in the last 4 years!!! I also don't receive my credit card statement as well. We also changed my mom's email address when she moved into a retirement home. I still don't receive her bank statements to do her bookkeeping. And what is worse is that she passed away and now I can't complete her affairs to hand it in to the auditors. I am really really really disappointed in Standard bank. I have even tried to fix this whenever they phone me for marketing, but nothing has been done!!!