Rant I hate it when !

My husband's parents always expect my husband to be there when they need a favor it's always to watch his younger brothers and I find it so annoying they would always make us watch them when we were living in the garage of their house and they wouldn't care if we said we had plans or were going somewhere one time his mom got pissed and said " watch when your daughter is born i'm not going to watch her! like excuse me but i'll NEVER let you watch my daughter nor will I need you to watch her. What's even more annoying is now that we have our own place , they show up uninvited when we don't answer their calls and just leave their kids here it's so annoying like if we didn't pick up don't you think were busy or have things to do ? It's like they always expect us to say yes and even when it's "no" it has to be yes. We have a kid of our own soon to be 2 kids. Your kids are YOUR responsibility. When will they ever learn -.- they also have an older sister who is (19) years old why can't she watch them? Oh wait because she wants to go to the mall or someshit well too bad! They usually make us babysit because their kids don't want to go with them somewhere well guess what, a parent is the boss not the kids! Rant over