Still won't work. It's just not worth trying to remember it, and thus not worth mentioning the term.

It's more nuanced than that. You can't be disfellowshipped unless you were baptized as a JW, which you can tell if someone was or not. That's just not something you can easily lie about. At best you can say you were "disassociated", but that's not worth that either.

You're better off just saying "put me on your do not call list" than trying to come up with a lie like that.