Well, actually they cancelled it within 12 hours of me sending the email. I sent the "Cancel Order 69xxx" in the subject line, and sent it to the sales email, and CC'ed the support. Shortly thereafter I got another email from "worldpay" saying my refund has been processed.
**YAY**.. Thank...
Thanks to the info here, I just cancelled my order for my Arctic I placed back in September. Number 69xxx. Let's see how long it actually takes to "cancel" it completely now. Spartan (Dragonlasers.com) here I come! They are back in stock now too!