I hate to admit it but now when I get a call from the office or a call from a coworker I let it go to voicemail and then get the message and can be better equipped to answer what they need.

The reason I do it is because I heard the owner of the company saying that is exactly what he does with all of his calls, he doesn't like to blindsided.

Well nobody does, but I figure if that is how management wants to operate, who am I to argue? I'll just do like him and if someone ever says anything I'll just tell them it is part of my "management in training" I am conducting on my own.
I will still take customer calls on the ring, but not company calls.
It is a shame some people have no other life but their work and try to drag others into that boat.