Remember oil tycoon Harold Hamm who divorced his wife with a nearly $1 billion settlement.
Well, his wife is rejecting it.
Sue Ann Arnall got a check for about $975 million but is turning it down so she can appeal the divorce.
Her ex-husband is an oil tycoon in Oklahoma and settled their divorce in November.
The ex-wife now says there are errors in the divorce deal. Her lawyers say she's worth somewhere in the market of $18 billion.