Disgusting Old burger

On 20 April 2016 (Wednesday) i Went to buy a wacky Wednesday at steers Braamfontein branch, when i got there i was the only person at the shop but i had to wait about 30 minutes to get my order. When people who came after me were getting their orders, while i was still waiting, a boy came in to change a burger that he just bought because the roll was old, it had green staff which were very disgusting. I was surprised that the manager did not even apologize to the boy she just changed his burger and that was it, then when i got to my office with my burger, mine was also old it had the same disgusting things on top then i went back to change it when i got there, there was a girl wanting to change her burger too because of the same reason as mine, worse part as if we were wrong the manager gave us attitude and gave me my money back