When all else fails, call for help. It's not the most dignified approach, but desperate times call for desperate measures.
Step 1: Yell loudly for at least 5 minutes.
6: The Wait for Rescue Method (for those who don't mind waiting)
4: The Distract the Foe Method (for when you're not alone)
Remember, help is on the way... eventually.
Disclaimer: Results not guaranteed. Help not guaranteed to be helpful.