Old / Off food

I bought a Mutton Biryani on the 26th at 1pm , and when I opened the container at 5pm to eat it for dinner it had gone off . The weather was not even hot on the day. Terrible experience. I tried to call the resturant and no answer on their landline. I did want a refund because this is unacceptable to pay R115 for a meal and it is inedible.