California’s attorney general sued “tax lady” Roni Deutch for more than $34 million on Monday, alleging that her law firm regularly violates state law by making false promises that it will help people resolve disputes with the Internal Revenue Service.

Attorney General Jerry Brown contends that Deutch overstates her TV claims of winning tax battles with the IRS. She advertises a success rate of up to 99 percent, yet successfully reduces the amount of money her clients owe in taxes in just 10 percent of cases, the lawsuit says.