This is unusual, but if you could, then try suing Watchtower (WT) corporation and/or the Governing Body (really controlling the corporation) for promoting and ignorantly maintaining the disfellowshipping & shunning practices. I think Watchtower is more liable for its disfellowshipping and shunning propapanda material than the Governing Body. But this will hurt both if the lawsuit is successful.
It's a possible win-win situation. If Watchtower wins this, then it will definitely lose public opinion especially when the legal battle is prolonged.
Cunningly, WT and the Governing Body separated as a group perhaps in preparation for lawsuits. But WT in really is under control of the Governing Body.
Watchtower disfellowshipping and shunning has done extensive harm not only to the wrongdoers, but friends and family. Many members were wrongfully judged. For example, some of those who testified to public media & courts were wrongfully judged - abuse of disfellowshipping.
Lives were ruined most mentally and spiritually as definite effects of disfellowshipping & shunning. Over a period of time there were cases that resulted in suicides.
Be simple, truthful and credible.
In law, a class action or a representative action is a form of lawsuit in which a large group of people collectively bring a claim to court and/or in which a class of defendants is being sued. (Wikipedia)