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Contact us

Australia Day opening hours

The TIO is closed for Australia Day on Thursday 26 January 2017 and will re-open at 9am on Friday 27 January 2017.

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.

Complaints and enquiries

Online complaint form

You can submit a new complaint via our online form or update your existing complaint.


1800 062 058 Our complaints line is open from 9am to 5.30pm Monday to Friday, Australian Eastern Standard Time (Australian Eastern Daylight Time when daylight savings is in effect). 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.


Email the consumer complaint form to our Complaint Handling inbox.


Send our consumer complaint form or a letter to 1800 630 614


Send our consumer complaint form or a letter to 

PO Box 276, Collins Street West, VIC 8007

Need an interpreter?

Call our hotline and we'll get one for you, or call the Translating and Interpreting Service (TIS) at 131 450.

Have a TTY machine?

Call us on 1800 675 692. You can preview the questions we will ask you on the fax version of our consumer complaint form

Want to use the National Relay Service?

If you are deaf, or have a hearing or speech impairment:

1. Contact us through the National Relay Service

2. Give the TIO number you want to call.

For more information visit the National Relay Service website.  

Have a media enquiry?

If you are a member of the media, your enquiry can be directed to our Stakeholder Engagement Team.

Want our news, media statements or annual report?

Subscribe here.

Faulty internet

Case Study - Complainant 1

A woman contacted us about speed and drop-out issues with her wireless internet connection.

Next step?

  • make an online complaint
  • 1800 062 058
  • WritePO Box 276
    Collins Street West Vic 8007
  • 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