My sisters went without me

I haven't seen my dad in months. Since February. I found out today from my dad that my sisters went to go see him today and they didn't even do so much as throw an invitation my way. I mean really. He lives quite far away and it's obviously then more convenient for us to carpool, but yeah. Not even so much as a "hey, we're going to dad today. Would you like to come with?". And I even saw my one sister yesterday when she popped in to get something. 😠😠😠