Humiliated

I had such a lovely evening, just to have it spoiled. The bar lady upstairs confronted me, telling me I have to pay for a drink I didn't order. I told her I didn't order the drink, and walked off, since me and my friend were on our way home. The bar lady then ran to get me stopped and called back by the bouncers. I understand that they are doing their jobs, but the disappointing part of it all, was that they believed the guy, whom I apparently "forced" to order himself a drink. He just said that the staff must sort it out. I have never been so humiliated in my life. I'm a paying customer, you can ask any of the waiters there, James (bartender) and Albert(waiter). Another lady came to the door, saying that this same guy has been making trouble earlier in the night, but they still only wanted the money, they didn't care what I said.