Dear Khun Rassamee,
Further to our discussion yesterday re PNR no. BMDTSR (Passenger name: PLUMMER/GLENN WAYNE MR) that our staff canceled wrong segment but this PNR already issued the ticket (Ticket No. 079-2280093001).
Once we found that we canceled the wrong segment, we have booked with the same flight same booking class but now in PR system the eticket not syncronise with the booking as PR consider this as rebooking.
Please can you help us on this matter. Thank you in advance and look forward to hear from you soon.