A similar thing happened to me the last time I ordered Chinese. And then when they did come, they couldn't get in because they didn't know what apartment to buzz - even though it said right on the invoice.
Probably the worst Chinese take-out experience I had was when I ordered curry chicken, consumé soup, and almond chicken. The person on the phone thought that I said; "Curry chicken, and consumé soup ON THE chicken" and they actually put consumé soup on the curry chicken.