>>> Not sure if I should feel really slighted, call him back to ask about this, or take this as a message that I am not wanted and will never be called again.
Please tell me your thoughts and if I'm way off base here and what you would do?!<<<
In my own experience, I think that particularly when I'm stressed or frustrated, I have the instinct to feel slighted / think someone is acting a certain way because they don't like me WAY more often than is actually the case - and in almost all circumstances the best outcomes come from just making a conscious choice to ignore that possibility and align my actions, at least, with acting as if I assume the best &/or least self-focused interpretation (often: this person is very busy themselves, and in fact isn't thinking about me at all!).