I get why you feel upset. I would probably react like you did (but without cursing).
It's possible that he wants to discuss this in session because it's better to discuss something like this face to face. Did he also told you why he didn't wanted to talk about it by Phone?
The thing with waiting until the next session is that you have to wait. I don't know how much time there is between your sessions. I would think and think about it. I would also think that T must hate me. (Actually I think that about PrevT now, because she doesn't reply to my email. Though there's a session planned, but that's two weeks from now.) It might would have been better if he had said something about it and then to discuss it more in the next session.