Pho Square Viennese Restaurant

The food is good. Iv been to this restaurant several times. I like the Pho. The cashier, a guy, was arrogant. He thinks he is cool. I was just asking if it is normal, for the Pho that I ordered, if the beef is really fresh and red. I have been to a lot of Vietnamese restaurants ordering Pho but this is just my 1st time to have that really fresh red beef. I eat soup with fresh beef like shabu shabu, but not the Pho yet. So i asked him if that is normal, since it was my 1st time to experience a fresh sliced beef in my pho. The cashier explained and i did understand. He was rude in explaining, asking me while he was frowning, maybe he did not comprehend what i was trying to say or ask. He said "what?" Then he explained again. Then he asked me "DO YOU UNDERSTAND?" So i said, "yes I do understand.." As if he was talking to a litle kid. I could hardly understand his very thick accent.