Do not wait by the phone for his call...you are worth his attention, and he is being rude and disrespectful to you if he just calls when he feels like it, expecting you to be doing nothing but waiting for him...if you are ready and he isn't, move on.
"If you're physically fit, hungry to learn and be better, I urge you to travel - as far and widely as possible. Sleep on floors if you have to. Find out how other people leave and eat and cook. Learn from them - wherever you go." ...or any age, really.