Spoiled Food

I went to buy food Yesterday , Tuesday (23/11/2015) at around 20:50 .Order 141 I bought burgers and a Steak Roll, then after few minutes i heard a Cashier and the staff from the kitchen talking about my order, the cashier said I asked you guys if we have steak and you said yes. After that i assumed that she will refund me and she said nothing, to my surprise when i got home that roll was like a Bill-tong roll instead of a steak roll and the burgers were burned. I couldn't eat that Roll, but because my kids were hungry they had to eat those burgers. I am very angry and disappointed about that service they gave me after Paying for that kind of food and waiting that long for that . its not like I asked for that food for Free. I paid for it with my hard earned money. even if was for free you just can't do that to a person.