Besides calling a locksmith, find someone who owns a slim jim, or a locksmith's kit. Other than that, try a metal coat hanger? Or try to slide something in to open the sliding rear window if you have it. I've never been successful breaking into my truck, so not sure how well any of these things might work on ur 08, but it's worth a shot to save a few bucks.
Breaking a window is the worst idea ever, then you gotta clean up the mess, and you might cut yourself.