Heartbroken

Megan
I was I guess broken up with yesterday. We've been together almost a year and long distance but only by five hours, but he's come here a billion times. Well we were amazing till Sunday. He just never replied, that lasted till yesterday. Finally he picked up when I called and he acted like he didn't even know who I was and said I have the wrong number and hung up. It was him, I'm 100% sure of it. Now I'm left with nothing no explanation and not even actually broken up with. He won't answer calls or texts and I don't wanna blow up his phone cause he'll just go change the number than I'm really screwed to ever try to contact him again. I just don't know what to do.