How should I handle a friend situation?

So, I have been best friends with two people I went to high school with for almost seven years and I live in a different state than them right now. For a year now I have been wanting to come back and we were all going to get an apartment together. Well, for the last few weeks I figured it probably wasn’t going to happen anymore because they just stopped talking about it to me. Well today they call me at work by three way to tell me that they found apartment…together…and that they were moving in the next three days. I was so much in shock I couldn’t even tell them how I really felt and just told them I was working and would call them back later, but the truth is I don’t want to now. They completely excluded me from this whole thing and its hurting. How should I maturally handle this situation?