Kahuna Bar & Grill Bad Bartender Robbed Me Deerfield Beach Florida

I gave the bartender $20 for a $7 dollar order of two beers. He gave me $3 dollars back. I was told from him that I gave him a $10 dollar bill when I know for sure that I gave him a $20 dollar bill. I told him that I gave him a $20 and he owes me $10 dollars more. He proceeded to tell me that I didn't give him a $20 and I gave him a $10.... This was the first beer of the night for me. I was positive that I gave him a $20 cause I just went to the ATM which only spits out $20 dollar bills. This a**hole bartender goes to the register and opens it and shows me a $10 dollar bill and tells me again that I gave him a $10.. I am furious at this point and decide... It is not worth arguing with this schmuck and I decided to leave completely and never ever ever go back to The Kahuna Bar & Grill in Deerfield Beach Florida EVER AGAIN. 

BEWARE OF THE BARTENDERS AT THIS PLACE THEY WILL RIP YOU OFF.