The CAV website provides for submission of online enquiries and complaints.

Enquiry	If you don't require Consumer Affairs Victoria to take any action on your part, but have an a question, you can lodge an enquiry online.
Complaint	If you require Consumer Affairs Victoria to take action on your behalf, you can submit a complaint online.
Dob in a Scam	If you aware of any scams that may be endangering Consumers, let us know.
Feedback about our service	If you have a comment, compliment, suggestion or complaint about an experience you've had dealing with our organisation, let us know.
Getting help in person	You can also get help from your local office or mobile service.