Fix my children’s deadbeat father

My children, Isaiah & Angel have not seen their father, since February of 2016 & that was only briefly. He always tells them he works all the time & is busy, yet, they see pictures of him on social media, with other women & their children. Please pray for God to turn this situation around. Their father is also requesting a child support modification, even though, the children are never with help. I do not receive government assistance, so please pray for God to work this all out in my children’s favor. Thanks