In the app / on the site
Use the bank's published complaint path first: commbank.com.au/support/compliments-and-complaints.html.
Do this once, properly. Screenshot everything — you will attach it to the letter.
The escalation ladder
Online / phone / post complaint
- 1800 805 605Official phone
- commbank.com.au/support/compliments-and-complaints.htmlMake complaint online; call 1800 805 605 (AU) or +61 2 9687 0756; visit branch; write Reply Paid 41 Sydney NSW 2001.
AFCA
- 1800 931 678Official phone
- info@afca.org.auPublished email
- afca.org.auIf unsatisfied with bank outcome, contact AFCA.
Regulator & ombudsman channels
- Australian Financial Complaints Authority (AFCA) https://www.afca.org.au/ Free independent EDR after bank process. Phone 1800 931 678; info@afca.org.au
Regulators almost always require proof that you complained to the company first. Attach your ticket numbers.
Public social channels
- No verified public social channel for complaints — we only list channels we can source.
Sources & verification
Every phone number, email and link on this page comes from these official pages, checked on 2026-11-04:
- commbank.com.au/support/compliments-and-complaints.html
https://www.commbank.com.au/support/compliments-and-complaints.html - afca.org.au
https://www.afca.org.au/