IMPOSSIBLE to change banking details

Debit order nightmare.

Change over to new bank. Bank offers to switch debit order. Unsuccessful. No MTN app functionality. Walk in to branch, unable to assist. Ticket logged. No online service available. Chat function limited to 4 prompts and no connection to a human. unsuccessful. I phoned in, unable to assist. Ticket was logged, got a case number and was informed that "back office" will have to do it and will contact me. Got email from back office stating: "No proof of account was attached" to which I rep**** with confirmation of account. The auto-reply was case closed since nothing was attached. Such terrible service in a tech driven 2025!!