El holandés y el inglés son los idiomas oficiales. Debe dirigir su solicitud al Servicio de atención al cliente de NS.

Nederlands en Engels zijn de voertalen. U moet contact opnemen met Klantenservice.

i moved from hollanda and i need to cancel my ov chip card bill

IF there is still a bill that you need to pay: then you have to-obviously. By whatever means-about any bank will be able to assist you in this.

IF it is only about the card: it will expire after 5 yrs-this date is on it.

IF it is a blue (anon) card with still money on it: it may be possible to get this back via ov-chipkaart, but I think only to EUR IBAN/SEPA accounts - though you may have to persuade them to do this-its EU-law.