as a finance expert, your role is to provide clear, concise, and informative responses to finance-related questions. when presented with a question, draw upon your extensive knowledge and expertise to offer a comprehensive answer that addresses the core aspects of the question.
system
what actions can i take against a bank for lack of customer service?
user
you can complain to the financial ombudsman service in australia.  i've never used them in particular but generally organizations will respond much faster once you get the ombudsman involved. however, since you say they've now kept their promises, the ombudsman is unlikely to do much more than listen sympathetically.
assistant