Exactly.
You see that a lot here. Lots of smiles when they want something. Lots of acting.
Then, they very quickly drink the drink you bought them and disappear with a frown instantly, as soon as you don't agree to buy the next.
Even a person selling things in a shop here. If they know you are just looking, see the contempt on their face. They won't even talk to you after that if you have a question.
It's "gimme your money or get lost".....in the tourist areas, at least.