Basically, there's three kids, two boys and a girl, one of their dads is in hospital, so they go to there mums bank to steal money to pay for there dads operation.
I think it's a few years old

Know the name?

Catch That Kid (2004) (http://www.imdb.com/title/tt0337917/)

Thank youuuu. Been wanting to know that for ages.

You're welcome.