Once they start bringing in people that wish to push the washtowel like this, it is time to start speaking a foreign language they do not understand. Preferably one that either has a reputation for being viciously difficult to learn (deserved or not, this might deter the jokehovians, especially at that level, from trying to learn it) or that has a reputation for being Satanic. Every time they push these questions, answer in that language.
For instance, in most parts of North America (Mexico included), as well as South America, if they start questioning you on how many pious-sneers are in your congregation or if everyone is putting in 200 hours per month of field circus and starting 40 studies per month, an answer in German will shut them up. (Which has a partially undeserved reputation for being a hard language to learn.) (Do not try French, Portuguese, or especially Spanish for this, since there are many that learn these languages to "serve where the need is greater".) If you answer in Sanskrit, they might be afraid because that is Satan's original language and, if you start understanding it, you might start seeing where the bibles are full of lies. (Example: "Satan" in Hebrew means "adversary" but in Sanskrit means "truth".)
I might just try that the next time those depps try hounding me about attending boasting sessions or going on Israel missions. Once I get to B2/C1 in German, I will answer them in German every time they inquire about my non-attendance or get me to commit to going. Or, if they get me to a judicial hearing, they are going to have fun trying to communicate. This trick might just work if they start coming to events to be judgmental or give people a hard time about faith to the washtowel, or hard lining the bible.