30 years ago when my parents left the Roman Catholic Church, our names were announced in the pulpit. The next few years were filled with constant ridicule by Church members. In my school, the priest called me up during the assembly and forcefully pulled my hair to and fro announcing before all children that I am now going to hell with my parents. Till now, our names are read out by that priest during his sermons as a reminder of leaving the Church.
My wife, an adult, when she left her community to get baptized as a JW, got whipped by her parents. No one from her community talks to her, in fact, they conducted a series of religious rituals to cleanse their homes and hurled expletives against her and do it till this day.
There are whackier ways in which communities treat their members and JW's are not an exception. In fact, they are less crazier than many other groups out there.