The only problem I ever had with any shipping (which was ordering from CDJ) was whenever I chose EMS, and it didn't come for over a month. D: I emailed them and asked them if they could find out the tracking of the order, and they were very prompt. They tracked the order for me and confirmed it wasn't lost, just that they (whoever had a hold of the package at the time) were being slow in shipping it, because of the EMS thing. -.- So just email them and ask for a report.
(Which, if they did it for my crappy, lowest and slowest ever, supposedly non-trackable shipping, they should do it for regular airmail, hah.) It probably is slow because of Christmas. :\