Clientele is not changing my debit order date and it's very inconvenient

I have been trying to change my debit order with clientele, I have used numerous emails, phone call, whatsapp and their app. No one is helping me. I contacted them to assist me with changing the debit order in December and nothing was done. The debit order went off on the old date in January. I followed up again and asked for this to be changed and the same thing happened again this month in February. I told them I changed jobs and am changing the date to better accommodate my pay day. But now I keep getting charged because they keep debiting on the wrong date and no one is saying anything about why they are failing to do this. Can you please assist me. This is very inconvenient for me. I have been trying their contacts (all of them) with no assistance.

I have 2 policies with them. And I can't believe how non responsive they are. I am wondering, if they can't assist with something very simple, what will happen when I have to claim. Is it worth keeping their policy. Is it worth the money I pay for my cover?