It took about 2 years for them to leave us alone. But that's partly because we moved in that 2 years and went through the whole thing all over again after our move. (JW relatives set us up). Health problems and depression are good covers. The main thing is to be vague in everything. "I don't know" is a very useful statement. (As long as you don't direct it specifically at the "Society".) The less you say the better. Shrug alot. Change the subject to innocent topics.