Foster kid getting preferential treatment?

I kinda know whatcur going through a little bit, me and my sisters lived in a foster home but the thing was that our foster parent didn't do anything for us. He mite be acting bad to get attention that he never really had. How long have u had him. Trust me, he doesn't want to drive a wedge between you and your family. Our foster mother didn't give us anything nice, I gave all my little toys to my little sister so she could have something to play and my foster mother through them away just cause she thought my sister was to old for them. Hes probably been through a hard life trying to look for the perfect family. Hoped I helped