Parents, I need help

I'm in the middle of moving and a dear friend of mine asked me to watch her preteens while she and her husband went away for the weekend. I have a LO, butI don't have anything that would interest a preteen.

Everytime I try to do something for them, I am met with boredom and disrespect. I took them to an outlet mall just to get around and they ended up in a fight. In pain, exhausted because my LO wouldn't sleep, and their parents aren't due till eight tonight.

What should I do?