Our office hours are 9am to 5pm Monday to Friday, Australian Eastern Standard Time (Australian Eastern Daylight Time when daylight savings is in effect).
The TIO is closed for the holidays from Thursday, 25 December and will re-open at 9am on Monday, 5 January 2015.
If you need to contact your telephone or internet service provider during this time, you can find their contact details either on your bill or on our members listing page.
Complaints and enquiries
1800 062 058 Our complaints line is open from 9am to 5.30pm Monday to Friday. Calls are free from landlines, but standard rates apply for calls from mobiles. If you call from a mobile you can ask us to call you back.
Use our online complaint form
You can also use this form to update us about your complaint.
Send our consumer complaint form or a letter to
PO Box 276, Collins Street West, VIC 8007
You can lodge a complaint in person by visiting our office at Level 3, 595 Collins Street, Melbourne between 9am and 5pm Monday to Friday. No appointment is necessary.
We are close to public transport. Our office is near Southern Cross Station and trams 30, 31, 109 and 112 stop outside the building.
We have wheelchair access.
Need an interpreter?
Call our hotline and we'll get one for you, or call the Translating and Interpreting Service (TIS) at 131 450.
Want to use the National Relay Service?
Want our media statements, annual report or newsletter?
- make an online complaint
- 1800 062 058
WritePO Box 276
Collins Street West Vic 8007
VisitLevel 3, 595 Collins Street
TTY1800 675 692
National Relay ServiceCall on 1800 555 677 then ask for 1800 062 058
- Fax our consumer complaint form to 1800 630 614