I wanted to postpone my flight. When I called them, the hotline was always busy. The auto reply said that go to Trip.com App and change the date. When I change the date of flight in Trip.com App, there was no place to select the date. Then I called back. This time I got through the line and customer service girl said that they will sent by email to agree the charges of changing date of flight. But they didn't sent. I waited and called back then they said that can not postpone only one passenger because I bought for 2 passengers in one booking no. They advised me to book again or call airline directly. What the bad service is it! Later I found out that one of passenger name was wrong and one word missing. Then I asked them to change back. They said that I only left 2 days to departure. So they can not change for us. What a poor service! Pls, Stay away from this agency!