Then pay attention. If you're taking a call, then take the call. Don't keep doing everything else. You know how that feels. Don't do it to others.
Many people complain about colleagues who take calls during meetings.
Well, if a guest has just dropped in to just kick around some ideas, go ahead and take your calls. But if you have a scheduled appointment, don't take phone calls. Stop fielding them. Listen to your guest in the room with you. We want to listen to you.