ABSA BANK - IMPOSSIBLE TO CHANGE EMAIL ADDRESS

I left a company on 12 May 2019. Since then I have tried changing my email address to my new email address. When I make payments over the internet, it still sends the proof of payment to the old email. I have been to the branch, I have phoned customer care (calls take around 25 min and then just cut) Ive tried making the changes on the internet banking "change profile" and then I notice ALL MY INFORMATION, except for my cell number, was incorrect. What can I do to get the email address changed together with all my other information??????????????????????????????????????????????????