Worst Bank EVER.

Hi ABSA, I will be abroad for while and I want to change my OTP settings of Internet banking to email. I went to the Table view branch. They are unable to change this, which I may understand. The person who helped said I should send an email to ***. I did that on the 3rd of May. No response. Sent an email on the 5th of May, no response. I visited the branch again on the 6th of May, the person, Oh...you should attached your ID with 3 signatures. I did that and send the email again, this morning, no reply. How should I go about getting this done? And...I also collected my FNB card this morning, I'm done with ABSA. Worst customer experience ever.