雅高达给我发邮件说系统问题让我退订,但我的订单是不能更改的,想问我该怎么办Dear cai yisha,Please note that there has been a system error and it is not posible to confirm your booking, we would like to know if you agree to cancel the booking and have a full refund plus a 10 % discount for you rnext booking with us?Please kin...