I placed an order just now, and selected next day delivery, as I won't be here next week, but it went through without the next day delivery. I've had to call MAC to cancel the order (MAC Chat tells me I am not authorised to access the server??? so I couldn't talk to them that way). They are going to cancel it so I can try again, but advised me not to try again until they call me back to confirm it has been cancelled, and that the refund could take up to a week!
I just hope that what I want doesn't sell out before they call me.