How to lose customers 101

Idiots have stopped emailing homeloan statements to customers. Blocked customers out of their phone app, blocked customers from using online banking (both of which have to be re-activated by in-branch visits). The call centre takes forever to answer, when they do answer, you get cut off. Emailing them gets you an autoreply saying you'll get a response within 24 hours, but this never happens. Escalation via email also falls on deaf ears.. What a ****show..