Romans accuse customers and start an argument

So me and 5 friends went to get pizza. My one friend ordered a regina pizza. When she got it it was hawaiin. And she told them that she didn't order that and then she told her it says on the slip that it's hawaiin. But she doesnt eat it because shes allergic to pineapple. When i told her that i was standing next to her and i heard her saying regina. And she started an argument in front of everybody saying that we are wrong. Eventully they made another one and the manager gave it to us and then said \Next time just know what you are ordering". Like we are stupid!!! We know exactly what we ordered!!! What happened to the customer is right? And when she realised she was wrong she started an argument with us!!! In front of everybody!!!!"""