Welcome to the site, phuidh!
As Author says, sadly this happens. Far from being unique, it's actually a bit like buying a toaster and finding it doesn't work.
If you bought it from a good store, they should give you a replacement.
Look, you've got it all wrong! You don't NEED to follow ME, You don't NEED to follow ANYBODY! You've got to think for your selves! You're ALL individuals!
Yes! We're all individuals!