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Contact Us

Quick Links to Popular Questions

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Reporting scams

If you believe you have been the victim of a scam, please contact us immediately on 1300 550 216.

It’s important that you get in touch with us if:

  • you’ve sent money or authorised a payment due to a suspected scam
  • you’ve provided your identity information and/or account details to someone who you believe is a scammer
  • you’ve found unauthorised transactions in your account statements.
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Reporting a lost or stolen card

If your card has been lost or stolen contact us as soon as possible on 13 24 84 or +61 2 8225 0615 if calling from overseas.

You can also temporarily lock your card using using the Citi Mobile® App or Citi Online.

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Report any scams to Scamwatch

Report any scams to Scamwatch, an independent website run by the Australian Competition & Consumer Commission (ACCC).

Scamwatch provides information to consumers and small businesses on how to recognise, avoid and report scams. Anything reported to Scamwatch will be analysed and acted on by the ACCC.

Contact Details

You can find contact details for all our products and services below.


General Enquiries

Credit Cards and Personal Loans


Call Us

General Enquiries

Credit Cards and Personal Loans
13 24 84

From overseas? Call +61 2 8225 0615


Credit cards and Personal loans

Call 1800 722 879


Credit cards and Personal Loans

Call 1300 369 797
From overseas? Call +61 2 8604 4713


Write To Us

Online Enquiries

Click here to make an enquiry

Click here to submit a Complaint*, a
Compliment or General Feedback.

*Click here to view our Complaint Management Policy.

Postal Address

GPO Box 40, Sydney NSW 2001.

Registered Office

National Australia Bank Limited
395 Bourke Street
Melbourne VIC 3000


Credit cards and Personal Loans


Chat With Us Online

Log in to Citi Online to chat with us.


For customers with difficulties speaking English or who have hearing and/or speech impairments:


National Relay Service

Telephone Typewriter (TTY) Users -
call 133 677; then ask for 13 24 84.

Speak and Listen Users -
call 1300 555 727; then ask for 13 24 84.

Internet Relay Users - connect to the
NRS website;
then ask for 13 24 84.


Interpreter services for customers with limited English.

Learn how our interpreters can help you with information on our products and services.

We recognise that you may prefer to speak to us in a language other than English. Our interpreters speak a wide variety of languages. Contact us on 13 24 84 and we can arrange for an interpreter to help you (subject to availability).





Call 1300 555 625

8am - 6pm, Mon - Fri AEST
(Excluding Public Holidays) 

Mail us
GPO Box 3319, Sydney NSW 2001.


AIA Australia

Call 1800 333 613

8am - 6pm, Mon - Fri AEST
(Excluding Public Holidays) 

Mail us
PO Box 6111, St Kilda Road Central,
VIC 8008.



Call 1800 016 284

8:30am - 6:30pm, Mon - Fri AEST
(Excluding Public Holidays) 

Mail us
347 Kent Street, Sydney NSW 2001.


AGA Complimentary Insurance

Call 1800 072 791

8am - 5pm, Mon - Fri AEST
(Excluding Public Holidays)



Cheques and Deposits


Credit Cards

Mail us
GPO Box 5427 Sydney NSW 2001


Customer Service Centre

Mail us
GPO Box 40, Sydney NSW 2001


Personal Loans

Mail us
GPO Box 5427 Sydney NSW 2001


Accessibility Services


National Relay Service


Internet Relay Users

Connect to the NRS website; request 02 8225 0615


Telephone Typewriter (TTY) Users

Call 133 677; request 02 8225 0615


For customers who may have difficulty speaking English - contact us on 13 24 84 and we can arrange for an interpreter to help you (subject to availability).


Speak and Listen Users

Call 1300 555 727; request 02 8225 0615


Hardship Assistance


Financial Hardship

Call 1800 722 879 or email

9am - 9pm, Mon - Fri AEST,
(Excluding Public Holidays)

PO Box 3453, Sydney 2001.

You can also find out more information here.

Our Complaints Process

We are committed to making account management easier and more transparent for our customers; however we recognise that we may not always meet your expectations.

Find out more about our complaints process.


24/7 Customer Service Centre


Call 13 24 84 

From overseas? +61 2 8225 0615


How We Can Help

Help and Support

Help and Support is your first point of call for all Citi Online questions.

Visit Help and Support

Citi Online

Access and manage your money in a quick, convenient and secure way, from anywhere in the world.

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