We cannot correct this for you. You need to contact HTM, the company that brought you to the Central Station. You probably made a mistake with checking in or - out.

https://www.htm.nl/en/customer-service/restitution/restitution-form

YOu have to pay for NON-train rides-and this goes as always by checkIN+OUT- but youre lucky-its only 4 (and not 20 as for trains) if you forget either in bustram-normal fare is around 2€.

Only YOU can correct this-and its also wise to read a little more about how the system works here.

Via uitcheckgemist.nl

A € 4,00 charge typically means a tram/bus ride with a missing check-out.

You can easily correct that yourself, via https://www.uitcheckgemist.nl/?locale=en

The difference between the € 4,00 and the actual fare (€ 1,78 for HTM tram 9 Circustheater to Central Station) will be credited on your next monthly invoice.