M.S.
Was any of this established through the courts or in writing? If not, you're going to have to get an attorney. My friend went through this and she regrets never doing anything formal. Do it now while you can because she is out thousands of dollars, meanwhile her ex was living the good life with his new wife and baby, completely forgetting about his other 2 kids. If you can't afford an attorney, call around and see if you can find someone who will work with you. In the meantime, keep a journal of everything he has done, or not done. It will save a lot of time and you will have everything lined up.