Seeing all this concern has me a little more worried now though!
I played the deposit by PayPal in June and paid the remaining balance, again by PayPal on 11th Nov. That transaction is still showing as completed and has not been returned or refunded.
Did you pay via PayPal/specific bank? There must be a common thread as to why it's been cancelled.
Game are blaming everyones bank's, there are tons of people with this problem, the banks are not to blame, Game have seriously screwed up somewhere and are schoosing to pass the blame.
Also i posted it here, its part of Kotaku, to try and get more coverage: