four8five:
Or on the darker side, they will stop processing totally and instead will start draining their time in preparing noetic exchanges like, "case is still being processed," or, "no information update available, " or even, "No status update for Mr.X when we are still processing Mr. X's Grandpa's Green-Card petition and Mr X's Granny's Advance-Parole."
In a nutshell, time saved by those IIOs in waffling over the phones would soon be wasted in preparing written responses.
Justice delayed, is justice denied -- so goes the maxim.