If you want to avoid receiving expensive premium SMS/Calls and not be billed excessive amounts due to the use of third-party partner services, you have the option of blocking these services in the following way:
– Send STOP by SMS to the third-party partner’s short number. This way you unsubscribe from the service in question and avoid premium SMS/Calls charging.
– Go via our Mobile APP or Customer Portal (https://wsc.undo.be/) to your subscription, click on “MANAGE” and choose “NETWORK SERVICES” and deactivate the “Block premium numbers” service.