Well, you said you were pretty sure it was him calling. I'm guessing what may have happened is, he called, you didn't answer, your friend called him back, he assumed you gave him a fake # (or your friend aggravated him, which is probably more likely), and he deleted you from his phone. When you sent him the text message, he probably thought somebody was screwing with him. OR he still had your number, called you back to talk to you, you didn't answer yet again, so he assumed you were screwing with him.
Ok, shame on him for not calling you the first time, but you don't know the reason why he didn't. He didn't specify WHEN he would call you anyways. He called you the 2nd time, so obviously he was interested in talking to you.