In the app / on the site
Use the bank's published complaint path first: nab.com.au/contact-us/feedback/complaints.
Do this once, properly. Screenshot everything — you will attach it to the letter.
The escalation ladder
Phone / online / mail
- 13 22 65Official phone
- nab.com.au/contact-us/feedback/complaintsCall 13 22 65 (personal) or 13 10 12 (business); overseas +61 3 8641 9083; Indigenous line 1800 966 100; fill online Make a Complaint form; NAB app Messaging…
AFCA
- 1800 931 678GPO Box 3, Melbourne VIC 3001.
- info@afca.org.auPublished email
- afca.org.auIf NAB misses IDR timeframe or you are unhappy with 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:
- nab.com.au/contact-us/feedback/complaints
https://www.nab.com.au/contact-us/feedback/complaints - afca.org.au
https://www.afca.org.au/