Hmmmmm........your reply from Crazy Cameras looks very familiar!
I too had the same E Mail last week. Did exactly the same as you, cancelled the order immediately and forwarded the email to the Halifax credit card dispute team. I had made Crazy Cameras well aware that any correspondence from them was being forwarded on to the Halifax.
Checked my account today and the money they were so quick to take was credited to my account on 29th June. Fingers crossed, you'll soon have yours back