Anyone knows if I can cancel an MPD pre-order at the NFS?

I was thinking to wait till tomorrow and if no communication by them (my PAC expires today, I called them yesterday - they had no clue on advise and emailed them today to figure out if they have dispatched), to visit NFS and order there if I can cancel the MPD.

Last week I followed Jon's advise (whose email by the way came from an MPD account) not to cancel and order through NFS, but it seems that people were walking in NFS as late as last Saturday picking up the devices straight away.