I am sans kids, so I don't answer when my son/daughter call. If my wife (doubtful), or other family members call, the phone will ring, and I'll make the decision of if I choose to answer it. I've been a driver for 5 years, and am 30, who the friend are you calling a caveman? It's MY phone, what I choose to do with it, and who I choose to talk to while on the job is neither the job of management, or you.