I have read post similar in the past about been bookings made on the QF site. Some assume it has been ticketed as the booking appears in the QF flight list. If you check the EK flight in QF there should be the EK PNR, if you use this on the EK flight and you cannot select seats it is most likely it has not ticketed correctly. Also when you say the fees have been charged, have they been actually charged to your CC or are they pending, depending on how the CC provider displays charges it may be difficult to determine. Do you have email from QF with a ticket attached starting with 081 and the flights listed under that flight number.