Panda Express

My son placed an online order through panda for 2 plates of food, 2 egg rolls, soy sauce, chili sauce. He drove to pick up and when he came back we were missing an egg roll, soy sauce, and chili sauce. I called and spoke to a William who chastised me stating there's no way we placed an order online since panda Express doesnt do that and the soy sauce and chili is only giving on request.i stated we requested and it's on receipt. He got very rude saying panda doesnt use a website and I must have used uber eats to take it up with them. My son drove back, wasting our gas, with receipt in hand to just get tossed an egg roll...very rude!