I believe the invoice is not correct. How can I check whether my invoice is correct or make a complaint?

If you would like to dispute or review an invoice, please use the Online Portal:

1. Go to Request change in the My invoices section.
2. Select the event in question. 
3. Enter the reason for the change and upload any evidence you may have.
4. Just click on submit form and we will review the case! 

To clarify: Invoices for these types of use are not yet stored in the Online Portal.