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I hate to say this but I think you need to see an atty at once and get some sort of motion filed (not sure how your state works so that might not be the correct term to use) for some immediate financial support from your H.
You have children and right now you are needing to borrow money from your dad to feed them and now your water and power might be shut off. That is not acceptable and your H needs to be a part of this equation.
I would call the water and power company and see if some sort of emergency arrangement can be made. Call legal aid and see what can be done.
I know its hard to take those steps but you need some stability for the basics (food, power, water) and a legal agreement might be the best way to go.