Is this a normal relationship? how can i fix it?

He calls me a monster, that I hurt him on purpose, to never talk to him again and that all this stuff like how could he have trusted me... We have been dating for a while (2 years) and for the summer are currently in a VERY long distance relationship. He had been 2 hours late for a skype date, so we only got a little time to chat (I was kind of upset at him cause-well its a long story, but I got over it). The reason why he said all that stuff was because I said I had to go because my friend who I had plans with was here to pick me up. He kept messaging my phone, but anywhere I went I could not message back!!! It kept saying network error. Well the thing I went to was a sleep over and I didn't get back will late today... I had tried so hard to be there for him, but he felt like I abandoned him (I actually had told him though, can we please talk tomorrow, I'm upset now, and I feel like it would be better for you to get sleep). I swear on everything (even though swearing is bad), I feel like I give so much, I try soooo hard to make him see I love him, and i do i do i do with all of my heart. But then something stupid like this happens and i dont know how to fix it... I sent him a veryyyy long email explaining the situation and that I was so sorry and I made a video showing him my phone and that I was soooo sorry. Anyways, he was even more mad at me today when I was on my way home and still couldn't message him back... When I talk to him next should I be apologetic and show him how sad I am? Or should I try to suck it up, be optimistic to him just trying to comfort him? I feel so sick.. We can't speak that often cause he is half way around the world doing a bunch of fun stuff. Also he said he had two bad news for me that he wanted to talk to me about... Which is why he wanted to talk to badly, but through video chat, not text. If you were the guy what would you want from the girl? I constantly feel like in our relationship especially when he's away I shower him with love, handmade cards, and understanding. He loves me too, but since he is on the program, he I just don't hear from him a lot... Also when he says " dont ever talk to me again" he doesn't mean it, but it does mean something.. Like he's upset at me. Anyways, my biggest concern is making this right? How can make this right? I feel so helpless and sick... But I've felt this ever since we have been apart, which has been a month so far.