DO NOT PAY... and get out quickly!
What you probably didn't notice when your 'hostess' showed you to a table or 包厢 with a nice view of the park is that it's the one furthest from the exit and that it took you several twists and turns to get to it. The idea is to make leaving difficult should you decline to pay. There are also likely to be several bouncers/thugs in another room or waiting for you outside to make paying seem like the least painful option.
You may get off lightly if you make it look like you are willing to put up a fight; the prestige of foreigners in China is in serious decline, but no bar manager wants a dead 老外 on his hands. But getting off lightly may mean a black eye or a fat lip that you will have to explain to your boss, colleagues, wife or girlfriend, and if you're knocked out cold, then you will end paying that 1000 元 bill anyways without your consent.
Complaints to the police have a mixed track record. If you have visited a massage parlour or brothel, you may end up incriminating yourself. Even if you were a complete naif when you were taken, you need to be able to speak Chinese to make a complaint. And even then, it may have no effect if, for instance, the bar owner's guanxi is greater than yours.
Better not to enter in the first place. Alarm bells should ring in your head if: the bar/tea house/shop/ktv bar/massage parlour is far from the main street; there is no sign outside the establishment; if there are no other foreigners and/or few other customers inside. And if a really hot young lady is standing on the sidewalk giving you the time of day in your native tongue, just ask yourself this question：why would she be talking to me?
