So you're hanging out at the local coffee shop and you see a flyer posted on the wall saying "guitarist and singer wanted for local punk band." written in sharpie marker on a piece of half crumpled copy paper. You've got nothing better to do so you dial up the number and set up a time to go out and jam.
Then when you get there you find out the bass player couldn't make it and that the drummer is actually a dog. So, what's your next move?