Parents and Guilt

My parents drive me crazy sometimes! I feel guilty anyway about still living with them. I'm 22 I should be out of their house. I will be soon. I sure hope I will. Not only that, but they are impossible to communicate with. Here are few things that my parents have done to annoy me today
1. My dad was on the phone to my grandma in hospital and he hung up the phone before I got a chance to talk to her. He said that he didn't know I wanted to talk to her. I mean has he no common sense?
2. My parents always make empty the cat litter. It's not my cat. It's my sister's cat, but when she got married and moved into a flat it stayed with us. Now it has become my job to clean up any gross messes that the cat makes. I don't know how it became my job. It just did. it doesn't seem to matter that I might not want to do it.
3. My mother will never admit that she is wrong.
4. My mother always yells at me like I'm a dog and I've asked her not to do that over and over again, but she doesn't stop.
5. There are never enough sheets to fit my bed. So today I pulled all the sheets out and left them on the floor in protest.
6. Mum always calls me from the other end of the house when I'm in the middle of something else. Today when I was getting dressed she called me out of my room at least 3, I think maybe five, times! I have no peace. Sometiems I just need peace to concentrate on stuff.

I admit that I have been annoying and incredibly grumpy today. But I don't want to admit that to them because they'll take it as a vindication of all their own meanness towards me. If I apologise then they won't be forced to think through their own behaviour. Does that make sense. I sooooo don't wanna do steps 4-9