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You should file a complaint for visitation and phone contact immediately. If you are unemployed and homeless you should qualify for pro bono legal services. You can contact the County Clerk's office to inquire about how to apply for pro bono legal services or inquire at the County Bar Association. As long as you do not present a physical or emotional dangers of the child you will should get visitation and contact.
I hope this information is helpful and I wish you the best of luck.