Your buddy finally returned your call, but he was a long time doing it. Why do you think this happened?
I suspect he was afraid to call you after the argument. He had good reason to be cautious because you admit you blew up at him when he finally called. How did you feel after you exploded with him over the phone? Did the problem between you get solved, or did it get more complicated?
I don't know what the argument was about, and it does not matter. What matters is how you react when you disagree with someone and/or when someone disappoints you.
Listen carefully. You only have control over one person: YOU. My advice is to get a grip. When you learn to treat people with respect and common courtesy, many of your problems will melt away, and people will want to call you.
Dr. Joan's Harmony Key: Speak with a quiet tongue.