IRS gives away Tax Refund

I have a daughter born in 1973 whom i paid child support for up to the time she moved in with me. Prior to that time her mother and she moved from Arkansas to California. There was a dispute with the California child support inforcement people. We went to court in Arkansas and I won the court decision and I did not owe any more support to the State of Calif. In 1998, under some new law, the IRS gave California over $950.00 of my tax return without asking. I have a court document proving I didn't owe the money. The IRS said to contact California for the refund, but, California said they had the money and didn't care what Arkansas courts said. I was told getting a lawyer would cost twice what i would get back. I contacted my state Representative but she could not do anything.
Is there anything else I can do.