Need some girl-to-girl talk :(

So here's the story:  My bf moved to Toronto for university and we were having problems with the distance so we broke up.  2 months later he contacts me begging to get back together, and after a week I decided to give our relationship a second chance.  Now, after four months I'm having trouble getting a hold of him, again. (Ex. I send a text to him at 9:00 am, marked "read" at 10:00 am, 10:00 pm comes around and he still hasn't answered me).  It's getting really frustrating and I want to try to talk it out with him but it's hard to talk about it when I can't even get a hold of him!! I'm seriously considering breaking it off again, for good this time. It makes me me feel like I'm not important... Or something 😥. Thanks for hearing me out ladies