Tropika Competition

I recently won a prize in in the Tropika Competition. The prize was a Romans Pizza and a 200ml Tropika Juice. Two weeks after getting the SMS, I went to the Romans Pizza Chatsworth Branch and showed them the SMS that I received. I was told by the employee that they could not provide me with the prize as I needed the tillslip. This was the instructions from the store managers. I was very disappointed as the terms and conditions on the bottle did not stipulate this. I wrote a complaint to Tropika and a week later still no response. I feel that this is very misleading and disappointing service from both Romans and Tropika