Please tell me if I'm wrong....

Please tell me if I am wrong...
I work in home health w/ kids... yesterday one of the lil tikes got very sick and family sent to hosp... Being the person I am... I called up agency and told them what was going on... super told me to plan on going to the home unless I heard otherwise..

So guess what? I get there.. no kiddo to take care of...I asked super if I would get paid for time travel there...Because it was their fault for not contacting me... I got a resounding "NO" becuz I wasn't taking care of her...Yes, I understand their view...but it me up pretty bad... they have done this twice...
Anyone else have this prob? Any advice would be greatly appreciated...THanks!!