Had this happen to me at a beer bar in June but this was in Pattaya! I don't discuss prices in Pattaya since they are so low anyway so was shocked when one of the other girls asked me how much I was going to pay the girl I was about to barfine.
I just said forget it but the 'pimp' then said sorry sorry you pay bar take lady sorry blah blah and so I paid the bar and left with my girl without a mention of money.