An assistant is going to have to ask if it's life threatening as the assistant doesn't know you. Your T may really have not had time to call you and since you answered that "no" it was not life threatening, I bet you get a call before Tuesday. The assistant can only report the "facts" on a little scrap of paper for "calls" and your T isn't going to read anymore into it. T's got a piece of pink paper with a checkmark on "call back"/not urgent and maybe a couple words else?