It shall be the duty of any person to whom a direction is given under this Act to comply with and give effect to that direction; . . .. . . .
Without prejudice to any right which any person may have to bring civil proceedings in respect of any contravention or apprehended contravention of any direction given under this Act, compliance with any such direction shall be enforceable by civil proceedings, by the person by whom the direction was given, for an injunction or interdict or for any other appropriate relief.
Any power conferred by this Act to give a direction shall, unless the context otherwise requires, include power to vary or revoke the direction.
Any direction given under this Act shall be in writing.