No response from Absa

I have started to communicate with Absa via email in December. I sent emails to *** as well as *** as this is for account maintenance on my car loan. I only got an email reply from them on 13 December, after logging it here on Hellopeter. They said that they have sent my request for change in debit order date to their admin and waiting for feedback. I do get automated replies, for example case C-***5, C-***3 and C-***0, but nothing happens after the automated reply. Then I decided to give up on the email communication and phone them on ***, but when I reached the account maintenance and typed in my account number, it couldn't recognize it and the call was ended due to technical difficulties - no option to talk to someone. So I still can't communicate with Absa. Want to know what should I do to talk to someone at Absa Vehicle Finance?