Terrible customer service

They changed my debit order date to a date that just didnt suit my needs. I get paid on the 15th and their only options are the 27th and the 1st. I tried contacting them but their app kept giving me errors and the OTP never came through. So I called them. I waited for almost an hour on the line before they ended the call. The next day I tried their app again and this time I was able to log on and tried using the chat. Again I waited almost an hour for a response. When an agent finally answered she almost immediately ended the chat while I was typing. I started a new chat and the agent was about to end the chat after not even one minute as I was trying to reply. Luckily he didn't but he wasn't very helpful either. Just told me that the decision to have only those two dates came from on top and the only other thing I can do is pay via EFT.