Aw thank you but that's the one that wont work.
Here you go :)
Code wont work, can't refresh to get new code (same one keeps showing) has this ended?
It’s actually more cost effective to go for the £14.99 deal twice over when you factor in the additional fee (14th) month you will get.
Each time the FB page with the code refreshes you get a new code. So I'm guessing someone already used the code that was posted in this thread hence why it was invalid. Just click the link and you'll get a new code.