I am not saying that he is like this for certain, just that since the OP doesn't know and she seemed quite into him, she should've at least tried to find out for sure whether he's a jerk or he's just a bit dumb when it comes to understanding women. Then again maybe that itself is a negative trait for the OP and she can't stand men who don't understand women so then no point in calling at all, one way or the other.
If he was used to not contacting her between dates, how could he have known that she expected him to contact her this time? It's bad manners ok, but what IF he really thought she wouldn't have liked it, as unlikely as it seems.
And of course she's not obligated: it's just something that I would do if I was into someone (I'd do it for ME). I'd make sure I know whether he's treated me wrong or we just didn't understand each other, before making a decision about him.
Anyway it doesn't matter, seems like the OP wasn't so much into the guy as it looked like.
OP: if he does contact you again, please make sure you make the communication issue very clear (I mean, talk about it explicitly).