Just to give an update, I spoke to 4 call centre staffs today, no one could help me to reinstate my booking. Everything had been cancelled by the ticketing staffs this morning around 8am (29/09/22).
To give you a time frame, here's the chronology. Initially I booked a reward ticket on 01/04/2022 as per below:
MEL - NRT - 30 SEP 22
NRT - YVR - 03 OCT 22
YVR - YYC - 06 OCT 22
YYC - JFK - 12 OCT 22
JFK - HND - 31 OCT 22
HND - MEL - 02 NOV 22
Since Japan hadn't opened for tourists, I tried to change the flight date of my NRT - YVR to 30 SEP 22 to avoid getting stranded at NRT airport for 3 days. I spoke to 10 different CC staffs and were only able to speak to the overseas ones. They all said they couldn't see any availability of seats on NRT - YVR route for 30 SEP when they tried to amend my existing booking. However, there were seats available if you tried to create a new booking. I tried everything, even sending numerous emails to Stephanie Tully, Frequent Flyers inbox and Feedback forms but no one responded.
As a result, I decided to create a separate new booking, 53xx_x, to fly NRT - YVR on 30 SEP. On the other hand, I asked the CC staff to cancel one of the legs, NRT - YVR on 03 OCT, from my existing booking 5Qxx_x. This event occurred on 30 Aug 2022 and they confirmed only one leg was cancelled and processed. I even received a call from a ticketing staff to confirm that I only wanted to cancelled one leg.
On 01 Sept 2022, QF sent me an amended itinerary with the correct routes as per my instructions. So the final itinerary for 5Qxx_x was:
MEL - NRT - 30 SEP 22
YVR - YYC - 06 OCT 22
YYC - JFK - 12 OCT 22
JFK - HND - 31 OCT 22
HND - MEL - 02 NOV 22
And the new booking 53xx_x had one flight only:
NRT - YVR - 03 OCT 22
Everything was correct until the morning of 29/09/2022 when suddenly my booking disappeared from CheckMyTrip website. Everything disappeared from JAL website and QF. I called call centre staffs and were told it had been cancelled this morning on my request!!! I told them to check their notes and their responses were "Ohhh, I see what happened here". They never admitted it was their mistakes to cancel the whole thing.
Why would they do that? It was all correct since 01 Sept 22 because they removed the one leg which I didn't want. Why would they cancel they whole thing after they sent me the correct itinerary, a month before that? The new itinerary had e-tickets (081-xx_) and was correct!!!
Since they were unable to reinstate my booking, I had to cancel my other booking along with car rentals, accommodations, attractions, etc. I have suffered financial losses since some of them were non-refundable. I will be claiming compensation from QF for my losses since it's their fault and won't hesitate to take them to VCAT. Their competency is worst then 3rd party booking website like Aunt Betty or BYO Jets.
Attached are snapshots of my itineraries which I hoped would help you guys to understand the chronological order of my booking. The last one which was issued on 20 Sept was due to involuntary change of flight from QF. Somehow they decided to re-route my flight back to SYD before putting me on a domestic flight to MEL.