Whether you got the $400 *advance on your 2003 tax refund* depended on how you filed in 2002. If you didn't get the $400 yet, you'll be able to claim $1,000 for your child tax credit in the spring, rather than $600. And no, you can't talk to a real person at the IRS without going through 30 minutes of electronic receptionist. However, there is a link at irs.gov that lets you check on the $400.