Tresspass, but it was two men trapped in the building, not women. The old black man inside the building tried to help them and the gang used a cop car decoy to try to fake them out.
Nope not that one. I've seen that one. It's a pretty obscure one too. I thought that movie was a pretty good idea for a plot with some good actors in it but it certainly wasn't near as good as I was hoping.