I used to do the same thing with my boyfriend all the time! He would go out with friends and I would call and get mad if he didn't call or answer so I just kept calling. I then read this really good book "Why Men Love *****es" (great book!) and she talks about how guys veiw the multiple calls. It made me think so what I did then was find something else to do while he was out/busy, so that I wasnt just sitting by the phone. This helped sometimes but not all the time, cause it just worried me more. Another thing to do would be to do the same thing back. Either don't answer when he calls, or don't call back. I KNOW THIS SOUNDS IMPOSSIBLE AND BELIEVE ME ITS HARD.. BUT IT WORKS! I only had to do it a few times, and it worked. Now were better and don't have this problem anymore.. I give him time to get back to me, and he always does. Just some tips for you to try.