U.S. Senate Banking Committee Democrats sent another letter to Wells Fargo WFC, -3.46% on Thursday, asking why their other letters have not yet been answered.

The bank’s management has so far failed to answer all the questions the committee members have put to it, the letter says, following its settlement with multiple regulatory authorities in September for multi-year fraudulent sales practices.

The letter, jointly signed by nine Democrats including Ranking Member Sherrod Brown of Ohio and Elizabeth Warren of Massachusetts, again asked Wells Fargo’s board for a status report on its ongoing investigation of the fraud and a detailed timeline of when the board learned about the illegal practices and actions it took. They also asked why the board didn’t investigate the misconduct sooner.

The senators say Wells Fargo’s management is dodging them, even though its new CEO Tim Sloan told CNBC on October 12 that there were more answers Wells Fargo could have provided the Senate and the House, which also held hearings.

The Senate Banking Committee Democrats asked Wells Fargo previously to answer questions and add to the September 20 testimony before the committee by the bank’s former chief executive, John Stumpf.

Wells Fargo’s responded on Nov. 15 but either ignored or provided insufficient responses to the senators’ questions, according to the letter. Wells Fargo cited its own ongoing investigation when declining to answer some specific questions.

A Wells Fargo spokesman declined comment on the letter.

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Warren and three others also wrote to the bank’s auditor, KPMG, on October 27 about its role. They want to know why the auditor did not find the fraud and when it learned about the potential settlement with regulators. KPMG has been Wells Fargo’s auditor for more than 85 years.

The senators are now asking Wells Fargo when it alerted KPMG about the illegal sales practices, that it admitted go back to at least 2010.

A committee spokeswoman did not immediately respond to a request about the status of its request to KPMG. The auditor’s responses were due November 28.