How do i delete a facebook advertisement?

[Chloe]

Ok, so me and my friend made an ad on facebook and we didn't understand that you had to pay for it so now we are trying to get rid of it and we cant figure out how!!! So, like i thought maybe if we delete the account and page would it delete the advertisement also since there would be no one to pay for it! We are really freaking out and scared because we can't pay for it! Please answer asap and i know this is in the wrong section i needed answers quick thanks so much everyone!!!