The scam goes like this:

You’ve booked Hotel ‘A’ and made arrangement to be picked up by a driver from Noi Bai Airport. When you exit from the airport, you’ll be looking out for a man, the driver, and a sign with your name on it. But what the scammer does is to copy your name from the real driver and stand in front of him. Then, when you identify yourself, that scumbag will drive you off to Hotel ‘B’ instead, claiming that Hotel ‘A’ is fully booked and that Hotel ‘B’ is a sister hotel, or under the same company. 

Two things may happen to you from here:

1. In the middle of the journey, the driver will ask for the pick-up fee which will be a lot higher than normal. If you refuse to pay, he may use scare tactics by raising his voice or stopping in the middle of nowhere until you agree to pay.

2. Hotel ‘B’ will be much lower in standard than your booked Hotel ‘A’ but yet you are charged a lot more. 

Please be warned and inform your friends about it.