I’ve been in Japan 25 years and have never given them a yen . The bastards used to send a guy around the house to threaten us ( blacklisting , arrest , etc...) but both my wife and I told him to get lost . They still send a bill in the post which promtly goes into the waste basket .
When I lived there, I didn’t even have a TV for quite a while. The NHK guys would never believe me when I told them that.