last week will have their bookings cancelled and refunded fully, the airline said on Tuesday .
"Due to this error, some customers were able to purchase certain tickets at discounted amounts from standard rates, and the ANA Vietnam website was temporarily closed in order to address this issue," the airline said. "Customer service is ANA's top priority, and we strive to maintain safety and quality in our operations every day. We truly regret that this issue occurred, and deeply apologise to our customers for any inconveniences."
"For the flights which were erroneously processed, ANA will cancel and fully refund all itineraries. ANA will notify each customer affected by the error," the airline said.