Interesting repost from Kim about that Patong bar raid.
I just found this article from as far back as 2005 with reference to such offences happening in the Patong area, which suggests the problem has been around there for a long time.
Two named individuals in that article would no doubt have a lot more knowledge about what goes on in that area: Italian Olinto Barletta and Graham Tardif, then a member of the charity World Vision International.
According to a Google search, Graham Tardif is an Aussie who has/had extensive experience as Human Trafficking and Child Protection Programme Manager https://www.abc.net.au/sundaynights/stories/s1322431.htm