Bartender&Doorman ripped me off

So I stop in here in the morning and this aggressive bartender leads me to this girl. He gets me a drink and then ask if I want to get the girl a drink so I do. So she drinks here drink but were not hitting it off so well and I get up to leave. The bartender chases me down and says I need to buy here another drink. I said no I don't and hurried toward the door. The bartender then tells the big guy at the door that I didn't pay for the drink. Then the two of them gang up on me forcing me to shell out 10 bucks for a second drink. I won't be back.