CP will only cancel orders for extenuating circumstances. From their Terms & Conditions:
All sales are final, and cannot be cancelled. We will attempt to work with you if there are extenuating circumstances that justify a cancellation. However, we want our customers to be happy with their purchase.
Again from their cancellation policy:
As a general rule, we do not allow order cancellations once the order is placed. However, we understand that sometimes life interferes with your plans, circumstances change, and emergencies arise. As such, we do make allowances for extenuating circumstances. Please contact us with any inquiries.
lol... uhh no thanks...