Barcelos sold us rotten chicken burgers

Went to the Barcelos in Engen garage Protea glen R559 and bought 2 chicken burgers and chips for R80. When we got home and plaited, the burgers were off, stale. Took the food back and we were not even offered an apology, i was just told that it's strange that they sold these burgers the whole day and there was no complaint and given a refund. No empathy or customer care for having ingested a bite of rotten food that could potentially cause us physical harm.