DEAR ABBY: Eight years ago, my oldest son, a police officer, quit talking to us. We had no fights, no arguments — he just stopped answering our calls, and I no longer was allowed to see my grandchildren. As the year progressed, he also alienated his sister and brothers. For the next three years, I continued trying to contact him or my daughter-in-law, who I also thought I was close to, but they wouldn’t return my calls. Then they moved, and I had no new address for them. Now, years later, my youngest son (also a police officer) has done the same thing! One minute, he was on the phone laughing…