I cannot deal with my rude step siblings anymore. What do I do?

[Truth Hurts]

I completely agree with Brian. My husband's family is the same way. We used to go out of our way to help them and the one time we asked for a very small favour, we got the door slammed in our faces. His mother is the worste. She will go out of her way to accept his ex as her own daughter (they were never married) but refuses to accept that I'm her actual daughter in law. He has two children with his ex and we have 2 together. They have joint custody so we have them half the time. She refuses to see her grandkids when they are in our care. She will go out of her way to see them when they are with the ex but refuses to come see her OTHER grandkids. It's absurd.