Angelgirl, looking at the manual, I can't find that there's anything about the light color changing when charged; only to charge it for up to 8 hours before using. Also, it doesn't pull the cork- you do. It only screws into the cork (and reverses to detach from the cork) I charged it for closer to 10-12 hours to be safe, and used it on a bottle without any problem.
It sounds as though your frustration was based on your human error and not on the product. You may want to update or delete your review.