Actually, it doesn't matter. Elders never seemed to know the addresses or phone numbers of publishers. They were always calling us, every 6 months or so, for other publishers info. I finally told one he should write it down in his important phone number book; somehow he thought I was being an upstart.

There was once a time there was a list of all this info that the elders devised and shared with the other elders. But then the WTS evidently thought that was making it easy for the enemies of the WTS to find and persecute jws.

Now it doesn't matter, they have your name and the internet to find you, and better databases than we have.

No privacy act in the US, but if one is set up in US, changing the card info is the WTS making sure their collective butts are protected in case jws are made a target by the government.

PS I remember some sisters would not provide their DOBs, I guess they didn't want people to know how ancient they really were.