Does anyone else's family ever let them down??

Today was a support group barbeque.I was planning to go. My daughter was going to come just so I wouldn't be alone. I have never been and was nervous. She changed her mind. I had a hard time, but was going to go anyway. My husband was going to leave work early to drive me. The time came and went. He didn't show up. An hour after I was ready he calls from the grocery store, asking if I want anything. I swore at him and hung up. As I write this I realize that he lied to me. He bought some stuff and came home. His excuse "I thought you took the bus" Why would he call to ask if I wanted anything if He thought I had already left?? He knew how much this meant to me. I have been talking about it all week. I am hurt and angry. 2 days ago he got up early to take his brother's car to the garage. This is an adult who can drive. For all of the talk of being there my family really doesn't care. Ok, so they have to watch the seizures. They don't understand how horrible you feel after them. Sorry for rambling. Am I wrong to be hurt and upset??