It sounds to me like your T is placing the "blame" for your feelings on you instead of owning up to his own mistakes, at least with the time when your T said he was going to call you and didn't. Even with a client that doesn't have abandonment issues, that can be very upsetting. But your T should be extra careful knowing that you are so affected by this sort of thing. It can be agonizing waiting for a response. I agree with tinyrabbit that you should try talking to your T about it. Maybe your T doesn't fully understand how you feel about this yet.