Credit refund from NS
In case you missed a check out for a journey with the NS, they will charge the boarding fee of €20, -. Through a refund application you can request a credit refund from the NS. For this refund application we refer you to www.uitcheckgemist.nl. You can apply for a refund a maximum of three journeys per operator between January and June and between July and December. The application must take place within 6 months after you have made the trip. The refund is 'deposited' as a balance on your Mixx Card.