How do I dispute an invoice?

You have a period of two months from receipt of the invoice to file a dispute by email to [email protected]

• For an invoice to be paid related to a Navigo pass, the dispute must be filed via the online FAQ, using the form with the reason:
  "I want to pay or regularise my Navigo pass".

It is recommended that you prepare the necessary supporting documents before taking any steps to facilitate the processing of your application.