Those were quite the words you had with the JWs! BRAVO!
If I would've been the adult standing there I would've asked you calmly to discuss a case in point of disfellowshipping and shunning, rather than just a general blanket statement like you made; you just caught those poor brothers by surprise and very unprepared, I must admit. Hopefully they'll be better prepared next time.
The Organization just doesn't disfellowship people as if taking someone's name out of a hat. There is a very lengthy process that leads to disfellowshipping a person; towards the end, the person him/herself makes it plenty clear by their actions and many foolish ones even go as far as putting in writing out of their own free will that they no longer want to be a JW. Then, YES, by all means, grant their wish and let them go on and lead their lives how they see fit, and, YES, without the support of other JWs!
Read your Bible... HELLO!!! From the Old to the New Testament, there has always been the practice of expulsion for those individuals that choose to stop serving God!
By the way, I took away by your bitter words that you haven't done a good job of moving on with your life and forgetting about the JWs. Please, do yourself a favor... move on to the so much better non-JW life.
DY