It is pretty crazy. I wonder if he'll come to his senses because he's hurting them, or if their crying (pressure) will push him further away?
If I could, we would all stop contact with him, but that's petty and he's their father.
SD, I think you are too considerate of his concerns. What is best for your children? What is best for you? Are your children happier after talking to him on the phone?