I booked a business class partner award ticket on Vietnam airlines going from LHR to HKG. I was unable to access the seating chart during and after making this booking. I immediately called Delta and asked them to assign them. The agent said she contacted Delta's world department and they are not allowed to access their system or assign seats. I asked her for my confirmation number with Vietnam airlines and she was able to give that to me. I then went to the Vietnam Airline website and it does not recognize the number Delta gave me. Hmmm? First I am surprised Delta has a partner that if anyone uses they will be unable to access the reservation or choose seats. I am not feeling confident that I can rely on this to get me to where I need to be by a certain date? I have gone on partner flights with AA and United and have never experienced this.
Solutions? What am I missing?
PS
I did send an email and used the chat function with Vietnam but still do not know if anything has happened since I cannot access the reservation.