Why have my siblings have become cruel to me?

I have 2 sisters and a brother. I am the only one who followed my deceased parents footsteps and attend church. I love helping others, especially the elderly. I live a simple life and my siblings are worldly and all about money and possessions. Anyway, one of my sisters recently took ill and had to be in the hospital. My brother called and told me she was being transferred to another hospital and couldn't have vistors. Later that day, after I had sat in my chair worrying and praying about her, my brother calls back and he and my other siblings are all together laughing and talking. They have never really liked me because I have different values and beliefs, but to lie to me and make me look as if I was the only one who didn't care to come visit was just cruel. I don't know how to get over this feeling of being the outcast of my family. Anyone have any ideas?