I don't know if the person in front was more "important" or not; maybe it was the department chair or something (unless he is :-) It was rude of him to not decide from the outset that it would not be the same for him on the phone as in person and inform you of that; I guess he halfway said as much with his email comment but, not being there, there's not a whole lot you can do to "enforce"/be assertive about your time and how you felt about the things you wanted to talk about. It is bad mentoring/advising of him to do what he did but it isn't the first time you have known him to be a bad advisor for your style and needs? I'd figure out how to write things out and get him to sign/agree to them and work from those plans or how to state what I need in 5 minutes since he doesn't seem to have the care/attention span of a flea where you are concerned. It doesn't sound like he's going to get any better with his behavior so you have to figure out how to work things your way with less of his time?