Terrible Service

This morning around 11:27 during my tea time. I went to King pie-N1 game bought Cheese burger meal R52.40 assisted by Nolene,the burger was off went back to her and complained about it she took it and said there is nothing wrong with it,I asked her to taste it since she claims its not off she refused and her colleague tasted it and she said its like that question if I know how it taste , I told her that I gave my two colleagues to taste it and they both said its off, they started speaking Afrikaans which I dont understand.She then said she will replace it.I waited for more than 20 minutes for the cheese burger,My tea time was now finished still no burger told her my time is up she said there is nothing she can do about that the machine is slow.I had to leave and get back to work without the burger.What is upsetting is spending R52.40 and get terrible service and bad attitude from the stuff.