Quit callin now. Wait for her to call you back. Quit playing "double dutch" with your heart man. I've been there. The faster you earn self-respect for youself, the better off you'll be. I went through this for 2 years before I finally moved on. No matter what, I'll always love my first love, but I've learned that the love for her is not what it used to be. Since then I've gotten engaged to someone else. Your first is impossible to get over, but you'll look back on this and kick yourself for being so depressed. Just think of all the girls that are passing you up as you dwell on memories...
Don't call her anymore.