I hear you. I can't stand Bankwest after the absolutely junk update to their mobile app a few months ago and now their draconian data collection policies, which if you don't agree to, you get cut off from online and mobile banking. The so-called consent is actually coercion since they are online-only bank and there is no other way to manage your accounts. I have a complaint lodged with AFCA.
I sold an investment property yesterday so that mortgage is now closed off with BW. My remaining mortgage, current accounts and credit card are all getting closed just as soon as I can arrange to remortgage with another bank. I likely go back to HSBC unless another bank's rates are substantially lower.
I'll never use BW again!