I can understand your anger.. you are not a child, you are an adult. Your parents have done a great thing for you and your children ,, but YOU still need to have control over your life or you will feel the way you are.
Do you have a therapist? If not you should .. also a T can let you know of what kind of help you can qualify for low income housing ( no they are not all ghetto's) food stamps, help with utilities and the list goes on and on.. At least its worth looking into...
I hope you find some solutions