It's annoying

I dislike it when I refuse to do something people want/expect me to do, and they immediately switch it to an issue of liking them or not. I'll just not feel like doing it at the moment, and they'll go off on their accusations of how if I don't do whatever it is, it will mean I don't like them or the thing they put their heart and soul into for me to do. It's annoying, untrue, unfair, and plain stupid. There's not even any argument in it. Where's the logic?