Washington (CNN) Education Secretary Betsy DeVos is facing another lawsuit over the department's loan forgiveness program aimed at helping defrauded students.

More than 150,000 applications are pending, and some borrowers have been waiting years to hear whether they'll be granted debt relief. Seven borrowers, all of whom attended for-profit colleges, filed the lawsuit Tuesday.

"Department officials have not offered a timetable for reviewing these applications. It's becoming very clear that they're not treating them in good faith," said Eileen Connor, legal director at the Project on Predatory Student Lending, which filed the case on behalf of the seven borrowers.

The department stopped processing claims under DeVos, who wants to rewrite the Obama-era rule that allows defrauded students to seek loan forgiveness.

But a federal judge -- siding with Democratic attorneys general from 18 states and the District of Columbia -- ruled that DeVos' freeze was "arbitrary and capricious" and ordered immediate implementation of the rule in October.

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