Email address non-existent, and deducting fees from my bank account which they cannot explain

I called Standard Bank to request for a statement to be sent to my email address, as I do not have access to this particular period's statement on any my banking profiles. I was then told that I have to confirm my email address, which I did, and then informed that it is not the email they have on their system. Funny, as the email I stated is the only email address I have registered with Standard Bank on my banking profiles, and all statements that I can request myself are sent to this email!! Then I was placed on hold, only with the person coming back and saying that she cannot help me and that I have to go into a branch to have the issue resolved. If I could go into a branch, I would have done so in the first place and not used my prepaid credit to call only to waste my time!! Standard Bank, please explain to me how you suddenly have an incorrect email address on the system for a client that has been banking with you for almost 20 years? I am NOT able to visit a branch, and therefore I am NOT able to have this issue resolved? In addition, I am also still struggling to get my Standard Bank Mobile Sim card stopped, and am still paying for it when I have informed Standard Bank in Feb 2021 it is to be cancelled because it is not used anymore, this on top of charges debited from my account by Standard Bank which they cannot or do not want to explain what it is for when I have a fixed monthly banking fee!! I think it may be high time to change my financial service provider already, as struggling like this with a provider who claims they care about their customers has really been enough now. One thing I can maybe handle, but it keeps adding up, Standard Bank!