We were at kauai in Harrismith and the Cashier was so rude shouting at us regarding menu

We were at kauai in Harrismith and the Cashier was so rude shouting at us regarding menu .I would have canceled order cos my husband is diabetic had to proceed with order. Just for asking for ingredients she yells at us the other cashier came to help us and didn't even know her menu 12 May 8am harrismith kauai