The key for the taxis and vans you get from the queue at the airport is to ensure that you keep the piece of paper that the machine prints. You can show it ot the driver, but never let them take it. Then they know you have their details if they try to pull anything.
You could book an AOT car online at
https://www.aot-limousine.com/ or inside the baggage claim area. They have Toyota vans and Isuzu SUVs that would both probably work for you.
You could also use Grab and book a Grab Van.