@various_mm you can block here
How to manage your call services
Controlling your services is a great way to make sure that you are not spending more than you intended to.
In order to check the status and modify any of the available call services, you first need to log in.
You'll then be able to access the call services page. All the different services are described in the next section.
By default all the services are active, you can then chose to bar any of them by toggling the button from "OFF" (the barring is inactive on this service) to "ON" (the barring is active on this service).