Bad disgusting service

I'm so mad for the bad service I received one of your waiters gave me the most horrifying service, she refused to apologize, refused to give me her name, she gave me a mid finger and threw up a slip on my face, I got a footage of this. All I asked wAs to get a tray and she Said they busy washing them, I asked her to bring our food on our table she refused with an attitude, she said they don't serve that time of the, should you need the footage I'll send as your camera's might not have voice recording, they're drive was closed for some reason, I did not swear at her why she give me a mid finger threw a slip on my face, tell me how do I post the video footage