If a client sends you an email and then immediately leaves you a voicemail on your office phone and sends a text message to your cell phone requesting an update for a non-urgent matter, I suggest responding only to the email with a message that in no way provides an update of any sort.   You might simply say “thanks” or something unrelated like “let’s show some leg here”.  Another effective tactic is to respond with a link to a funny YouTube clip—perhaps one of a dog doing something comical. Sometimes clients need to be reminded that there are more important things in life, like a dog walking around on its hind legs.  And, more importantly, any of these responses will leave them in confusion for at least long enough to remind yourself what you are supposed to do for them.