Very angry for getting what i didn't order

I went to Mochachos At West Gate the cashier was very Friendly her name was Tebogo. I ordered two Mild quarter legs with chips take away when i got home, what i ordered and what i got was bad i got a chicken breast and wing i am totally not happy if they treat customers that was, there advert is misleading,or is it because they knew i wouldn't open the paper bag. The way i love Mochachos am really disappointed. Can they manger really look into this. I was very angry. My number is ***