How do I contact Optus? If the 'Click for live chat' button below is available, click on it now to chat with an Optus Customer Service Representative now. Alternatively, below is a list of our most commonly used numbers. For Acct info, Change Address, Change phone features From your Optus Mobile Phone - Call 1509 From any other service - Call 132 926 To make a payment - Call 1300 309 309 If you're relocating or moving house - Call 1300 555 241 To report a fault or request technical support - Call 13 13 44 For all other types of enquiries - Call 133 YES (133 937) Calling from overseas? Note: Calls from an Optus Mobile Phone to these numbers are not timed and are charged at 50c per call. For General & Billing Enquiries: Call +61 2 8082 5678 between 8am – 7pm Monday to Friday & 9am – 5pm Saturday (AEST) For Technical Enquiries: Call +61 2 8082 2642 Open 24/7 You can also c