Teriyaki Wok

I printed the online menu for the office. Beef teriyaki listed at $6.50. I called and ordered it to go. 10 minutes later I am there to pick it up and pay. He charges my card 8.75 and I say no, it's 6.50 pus tax, he said no. I said I just looked at your online menu, he said I must have looked at wrong restaurant. I back to my office and get the menu and take it to him. He said yes it is his menu but the prices are old from previous owner and he is not responsible for them, there was nothing he could do for me. I wasn't asking for anything but an apology. I turned and walked out saying he just lost an office of customers over here at the Tukwila commerce center. He then spoke to me in some language, I have a feeling I was told off.