Prominent plaintiffs attorney Thomas Girardi has punched back against a lawsuit filed by an Arizona lender claiming that he used loan funds designated for his law firm to fund a “lavish lifestyle” for himself and his wife, “Real Housewives of Beverley Hills” cast member Erika Jayne.

In court papers filed Aug. 7, Girardi, his wife and his firm, Girardi Keese, have asked a Phoenix federal judge to dismiss the suit and compel arbitration—something they say is called for in the firm’s loan agreement with the lender, Stillwell Madison.