Did you stop having contact with him altogether before you got these texts? It's sounds to me like he is playing head games. My bf (well, ex bf now I guess) does the same thing. He would ignore me, but if I stopped texting him or trying to talk to him, he would text or call or do whatever it took to get me to respond. Even if I was angry when I did, he didn't care. Just couldn't stand the fact that I was okay with not talking to him. It hurts their ego. Once you called him back he got what he wanted. If you think about it you might notice the pattern in your former relationship before you even broke up. I think the best thing you can do is completely ignore him. For me, it makes me feel more empowered. Kinda like..."You have ignored my needs for so long, I really don't care anymore. If we have anything at all left to discuss, we will do it on my time, not yours." And when you give yourself that space, you might realize there is NOTHING you want to discuss with him at all.