He didn't tell Roger that I was coming later.
Are you angry he didn't tell him?
Yes, i'm going to cut my friend out of my life.
It is upsetting to have a friend not pass on a message so its understandable that you are upset. Let him know how you feel and maybe he will be kind enough to pass on a message in the future if he knows how important it is to you.
I am so angry I want to kill him.
I am sorry he forgot but he might have a good reason he didn't. Have you also talked with Roger yet I think he might be understanding if you explain what happened.