How do I delete an iGive page that I've created?

Once a page has been created (i.e. you have clicked on the create page button and have a link for the page), it cannot be deleted till it reaches its end date, or till the target is met (if you've said "stop collecting after the target is met"). Once the end date is reached or target is met, your page can only be viewed, but it will not be possible to donate on the page.