Where an applicant in urgent proceedings makes serious allegations against respondents that are demonstrated to be untrue through further affidavits, fails to file heads of argument as directed by the court despite being given adequate time, and where the supporting affidavits may contain perjured statements, the court is entitled to treat the application as abandoned and dismiss it. Furthermore, where legal practitioners have conducted themselves unprofessionally by filing applications based on untrue claims and possible perjury, and then fail to prosecute the matter, the court may impose costs on a legal practitioner-client scale de bonis proprii as a form of censure.