We booked an itinerary on Air Canada one of whose legs is serviced by Turkish Airlines. Air Canada let us choose seats on all legs except the Turkish ones, claiming that we needed to contact Turkish to select those seats. However, when we try to access the booking at the Turkish Airlines site, it claims the PNR is invalid (which makes sense since it's Air Canada's).

Anyone else had this problem? I tried calling Air Canada but there's a 2+ hour phone delay (!!!!).

--G