Why have I received a toll invoice when I didn't travel on a toll road?

Toll invoices are issued to the registered vehicle owner when a vehicle travels on a toll road without a valid account or pass.

If someone else was driving a vehicle registered in your name you can end up receiving a toll invoice, but redress is available. If you weren't driving the vehicle at the time of travel, you can nominate another driver which means the toll invoice will be reissued in their name.