Bad Service and Attitude from the servant.

I went to get ed around food at the outlet. I order a drink which was suppose to have been Sprite but turned out to be Tonic Water of some sort. We returned it to the shop and told the guy front to taste it but refused to and said he won't drink what we drank and he sad it in a very bad manner. He didn't have respect and also laughed on our faces. This happened around 6pm today.