You seem to be taking a very minor, human error and turning it iinto a major catastrophe in which your T doesn't like you, is ignoring you, doesn't care about you, etc., etc., etc. The only truly clear headed thing you said was that he might not feel the need to respond at all. I mean, you didn't ask him a question and it doesn't sound like you asked for a response. If you would like to hear back from him, email him again and ask him to respond, and also ask to set up your next appointment. Don't fall into the thinking that if he doesn't respond, he must not care or he's mad or whatever. You aren't the first client he's had that missed an appointment. He can deal with that without turning to anger, etc. Slow down, think a bit more clearly, ASK for what you need. It will be fine.