I read a book about the same subject and it finally moved me to cut off contact with my jw family. I had told them some time politely but emphatically what I could no longer overlook in their words and behavior towards me. No change over 6 months except to get worse. I did not write a letter but told them verbally that to protect my emotional health I had to cut off all contact (no phone calls, e-mails, texting, letters, indirect contact by siccing other jws on me, etc.) It took almost a year of returning unanswered letters, packages and not returning phone calls, e-mails, texting, not even opening. I use caller id and blocking to handle phone calls. It was so freeing and I wish I had done it earlier. These people do not love you and are abusing you. It may seem hard at first but is so worthwhile.