Bad product or service

My first bad product was when me and my little brother went into McDonalds to get a cheese burger after we ordered it and sat down to eat it my little brother asked "is this a cheese burger?" I replied "it should be" "why?" He answered "because there is no cheese." I then looked inside the burger there were two buns one on top one on the bottom and a patty, that was it. Then we went back to get it fixed and then it was alright.