Review by Not happy for Naked Fish Sushi Restaurant

Ok so I have been here before and it is great food, but when visiting on my birthday yesterday at the time to pay the check I was told by the server that she had added on the 18% gratuity already for a large party? On the menu this states is for parties over six, but here was 5 of us???? We thought let it slide it was good food, now as I had 3 bucks in quarters left ion my wallet and was returning to the UK the next day I made up the last part of my share with as far as I am aware money!? When the server returned she got very aggressive said she didn't have a cash register ? Then asked after there was 200$ infront of here with the 18% she had added on for a laugh if I would go change up the quarters over the road ??! I laughed at this then had been insulted enough and decided to question the large party tax? She got even more offensive after at myself and ran off to the kitchen??? I asked to see the manager and got " I am the boss" so with an attitude like that seems like they may have been ripping of customers a while , the food is good but I shall never go there again make you own decisions but the boss here shouldn't have a business with an attitude like this.........