There's a problem and I'm very worried.

Since making the above reservation I've made several date and time changes. All routine. I have not, in any way, touched the first flight segment (MPM-DOH) and the second flight was booked and remains as a stop.

Tonight I noticed two QR flights were missing from my reservation. I called QF and they blamed it on QR, saying because there wasn't a ticket number in the reservation, QR cancelled. QF did accept some responsibility and I had no issue adding the flights back in.

After the agent went away to process the changes she came back having spoken to a supervisor who was concerned about the price of my ticket. QF won't reissue it until they speak with the supervisor I spoke with a few days after ticketing - back on 5 August, some four months ago, when I also paid for it.

According to the agent the supervisor (just now) has not been able to reconcile the price I paid on 5 August with what their system was showing should have been the price. Apparently the price on 5 August was something like AUD4900 base but I'd paid something like AUD3700 base. When I pressed the agent as to whether I was going to be asked to pay more, she said "I'm not saying that".

I have been promised a call back first thing in morning my time. This really, really worries me.