ST. LOUIS (AP) — Attorneys for the St. Louis Rams have filed a tax appeal with the state of Missouri, seeking a refund of about $400,000.

The St. Louis Post-Dispatch reports that the Rams have also asked the state to forgive an additional $445,000 in unpaid taxes. So far, the state has refused to give any money back to the NFL team.

The Rams have contested tax assessments before — they've filed six appeals since 2008, amounting to $4.7 million at face value.

There's no way to tell what happened with each case, but the Missouri Department of Revenue says four of the cases were settled. The state would not offer details, claiming that sales tax receipts are closed records.

A message seeking comment from the Rams on Thursday was not returned.

More From 600 ESPN El Paso