Right on Expat'!
This is the official DNC policy taken straight from http://www.do-not-call.org/policy.htm
Do-not-call.org (dnc), are not aiming to bring about the downfall of the Watchtower Society or even in ending it's door to door preaching work.Nic'All members of a free society have the right to worship as well as the freedom of expression to propound that belief to others.
This is not to say however that all forms of worship are either desirable, healthy or advantageous and the freedom Jehovah's Witnesses enjoy to propagate their beliefs needs to be balanced by those with countering views.
Especially in respect of Jehovah's Witnesses doorstep preaching activities, the rights of the preacher need to be weighed against the rights of the householder.
A religious organization granted its freedom to preach in a democracy must respect the wishes of individual members of that democracy should they request not to be called upon.
dnc exist solely to provide the public with an easy means of distancing and protecting themselves and their families from the activities of Jehovah's Witnesses.