Everyone's different, some people just take things harder.

Meet hank. Hank has been a friend of mine since 6th grade. I do a lot for Hank, favor wise. Unfortunately, I don't get the same.
I ask him for a favor one time. He agrees to the favor. When I go to him during lunch to help me with my homework (which was the favor), he runs away in a joke manner. I almost got 0 for the day.
So the next day, he's all normal like nothing happened. I tell him I'm mad & why. He gets angry, tells people he's mad at me.
Is this really fair? This is someone who I thought was my friend, yet he fails to accomplish that role.
In english today, I ask one of his friends, who Hank once got mad at, about how long it will take for him to get back to normal.
"About a week....maybe two."
That made me mad. I am not going to let this happen. So what do I do? Ask him.
No response. So today is "day two" of ignorement.

What do you guys think on the subject?