Bro pippo2002,
Sorry to hear about your unfortunate experience.
Would like to chip in some precautionary measures so bros will not get ripped off.
What just happened to you is a perfect setup for a generous patron like you.
Some bar girls will take you for a carrothead and call you stupid behind your back.
Interactions with WLs should be swift and decisive and partying should be done at a 3rd party venue at your choosing.
Not at a humsup bar.
The less time you spend at a humsup bar the less chance you'll get chopped gao gao.
There're always new bar girls joining the trade but the tricks are more or less the same 555.
When a cheongster has paid enough school fees he'll eventually be able to sniff a scam in an instance!