Refund required

I purchased at KFC last night. I was initially with my then boyfriend. I purchased and paid while the guy was seated. After a disagreement with him we decided to get a refund which the manager refused me. My problem here is not that, my problem is that they gave my food to the person I was with even after seeing that we were agreeing on things. Even after telling them not to. I paid for food that I didn't get. All I want is a refund. If they are thruthful, they will also say that he left and without me with the food. I would like to have my money back ASAP.