It kind of seems like you would rather talk to her on the phone than not have any contact at all this week, right? Your T seems pretty great. I personally have gotten a lot out of telling my T exactly how I feel when she cancels, even when her reason is totally legitimate (emergency dental work, etc). Sucking up my feelings and shutting down when I am upset is/was a big part of what kept me depressed for so long. It's way more satisfying to talk about it than to hope that she correctly interprets your angry silence.