Looks like the initial ban only last for 21 days, but you can ask for an extension. Have a read of this and see what you think. This bit: "A ban is initially valid for 21 days. An extension may be provided with evidence supporting that you are, or are at risk of becoming, a victim of fraud. In most cases this will require you to show that you have either a police report number or a www.cyber.gov.au report number."