Got a call from this number telling me they were filing a court case, "that day" at 7 PM. Warned I might be arrested if I didn't immediately call them back. Sounds a bit fishy, didn't know courts were open that late.
Tell them you know they're scammers and you've reported them to the FTC, the FBI and also your state's Attorney General (and do report them). Also tell them you are recording every call you make to forward to the FBI (they don't like to be recorded).
Other than that, block their number, although they'll probably find another number to call from. You may want to put fraud alerts on your bank accounts and also with the three credit agencies (Experian, Equifax and TransUnion).