Hello,
I have read your post, and I may have some advice to help with the calls from your creditors. Also, if the father of your children has never supported them, you might qualify for a legal aid clinic in your area. They may be able to help you get a judgment against him for child support, as well as a judgment to allow you to move to where your family is to be able to have more support.
I wish you well. Times are tough for everyone right now. Hang in there, as long as there is life, THERE IS HOPE.
T