Having the caller pay nothing and having the callee pay for the call does sound like it invites abuse, and discourages callees from even picking up the phone.

Having the caller pay nothing and having the callee pay for the call does sound like it invites abuse, and discourages callees from even picking up the phone. In Netherland, it used to be that the caller pays. Technically they still do, but many subscriptions come with unlimited calls and texts these days. Phone numbers that cost extra money tell you that before they connect you.