This is done through the relevant provider. At TopParken, we cannot cancel or change bookings made by other providers.
Booking.com:
https://www.booking.com/customer-service.html
Airbnb:
Heerlijke Huisjes:
https://www.heerlijkehuisjes.com/contact
Belvilla:
https://www.belvilla.nl/inspiratie/contact/
BungalowSpecials:
https://customerservice.bungalowspecials.com/customerservice