My boyfriend isn't making time for me

I'm at a loss. My boyfriend and I are long distance. All I'm asking is to talk on the phone. I've been asking for two weeks and he says he's trying to make time but he clearly isn't when all he does is go to class three days a week and hang out with his friends. I'm so upset, I've asked him repeatedly (not every day, maybe three times in the two week span) and it's the same thing every time: "I'm trying". He told me last night that we can today but it's 12 am here and 9 pm there and he clearly has no intention of calling me. I don't know what to do at this point, any suggestions?