Tell us about your complaint

If there’s something we can improve, or you're not satisfied with our products, services, staff, complaint handling process, or how we handle your Consumer Data Right (CDR data), it's important we hear about it so we can make things right. We’ll take your complaint seriously, work with you to address your complaint and try to find a solution that's fair and reasonable. At all times, we follow our complaint handling principles.

Make a complaint

How to make a complaint

  • There are a few ways to make a complaint:

    Make a complaint online

    • Make a complaint by calling us on 1800 805 605 from Australia or +61 2 9687 0756 from overseas1 (8am-6pm, Mon-Fri, Sydney/Melbourne time)
    • Visit one of our branches
    • Write to our complaints team (no need to use a stamp) at CBA Group Customer Relations Reply Paid 41 Sydney, NSW 2001

    Please tell us:

    1. Your name and contact details (you can make an anonymous complaint if you would prefer)
    2. What your complaint is about, including the products or services you’re complaining about, what went wrong and what you’d like us to do
    3. Any supporting documentation

    Find out more

Tell us about your compliment

We love to hear about your positive experiences and when someone in our team makes things easier, quicker or special for you. We’ll pass on the compliment and make sure we keep up the good work.

Give a compliment

Staff compliment

Other ways to get in touch

  • Visit your nearest branch

    Find your nearest branch

  • Write to us

    CBA Group Customer Relations
    Reply Paid 41
    Sydney, NSW 2001

    There's no need to use a stamp - we'll pay for the postage.

  • Accessibility services

    Message us in the CommBank app, see how

    National Relay Service

    For more info, visit the National Relay Service

  • Colonial First State (CFS) customers

    If you have a complaint relating to an Investment, Superannuation and/or Pension product provided by CFS:

    Call 13 13 36

    8am – 7pm AEST Monday to Friday (Sydney/Melbourne time)

  • Premier & private banking customers

    If you have a Relationship Manager working with you for your Business, Institutional, Premium or Private Bank accounts, please contact them or your Private Banker in the first instance.

  • Insurance by AIA Health and AIA Australia

    • Health Insurance provided by AIA Health
      Call 1800 943 010
      8am - 6pm, Mon- Fri (Sydney/Melbourne time)
    • Life Insurance and Income Protection provided by AIA Australia
      Call 1800 491 588
      9am - 5pm, Mon -Fri (Sydney/Melbourne time)
  • Insurance provided by Hollard

    Call: 13 2423 (8am-8pm Mon to Fri, 8am-5pm Sat Sydney/Melbourne time)

  • Call our complaints team

    8am-6pm, Mon-Fri (Sydney/Melbourne time)

    1800 805 605 from Australia

    +61 2 9687 0756 from overseas1

  • Pet Insurance provided by PetSure

    Call 1300 913 575 Monday – Friday, 8am – 8pm (Sydney/Melbourne time) or visit

Message us 24/7

Get instant help from Ceba in the CommBank app or connect with a specialist who can message you back. You’ll need CommBank app notifications turned on so you know when you’ve received a reply. 

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Things you need to know

  • 1 When calling from overseas using your mobile, standard roaming charges may apply. To avoid roaming charges, call the international operator in the country you’re in from a land line and provide them our number.