Relationship issues

Cindy
So my boyfriend and I have been I a relationship for 3 years and it's going to be four in a couple of months and we have been in a long distance relationship. So earlier today I called him and I was saying hello and he didn't reply and just hung up on my face and he knows how upset I get when he hangs up on my face and I texted him asking why he says he just didn't feel like talking and I was like you could of told me I would understand and I'm so pissed because he always does this to me. Do I have a right to be upset?