My question involves child support in the State of: Indiana

My son is 11 years old and when he was about 2 years old I went through a tough patch and applied for TANF. At the time I had lost my job and his Father was not paying support. I stayed on TANF for about 7 mos until I found a new job. Since then EVERY tax check my ex has had (He gets a letter saying I am getting the money) has supposedly went to TANF. Also he was in jail for failure to pay and I receive a 1,000.00 check that I was told was a cash bond. Where he paid actually 3,000.00 that should of went to me. It seems I should be getting money now for at least 10 years if not a little more and there is no money. I have called The Welfare Office, Child Support, and IRS and yet no one can help me. This has been ongoing for at least 3 years now and no one can tell me where this money is disappearing to. He told me again today that his tax check should have went to me but nothing again this year. Does anyone know what I can do or someone who can actually help me!