My SIM has been lost or stolen. August 29, 2019 02:39 Updated Follow If your SIM card has been lost or stolen, contact us immediately so that we can block the SIM and your account from unauthorised use. Call: +61 2 9233 5165 Email: firstname.lastname@example.org Related articles What are the Local Plan rates for calling international numbers? Advocates and Authorised Representatives How much does it cost for someone to call me on my Australia Post TravelSIM? Do I receive a monthly invoice/bill? How can I keep my existing number?