Food Was Off

i went for lunch on Saturday and ordered 800grams ribs. When the food came i smelt something off. Thought i was just imaging but could see that the meat look strange. i tried to smell but the basting was covering up the smell, then i cut a small piece and tasted and it was certainly off. I call the manager and he said he will do a new batch of the fresh ones that came in the morning? Why are they selling off old stock that is off? When the waiter came around i heard him saying another one!!!!!! Then another manager came to the table and apologised and said it was the basting and they will use a new bottle, seriously do they think i am this stupid and cannot taste the difference! My friend asked whether they will be giving us the last round of drinks on the house and he said no, she then asked what will they be offering in its place and he offered us dessert. Why should we have had to ask and this was not offered. The only person we were happy with was the waiter. The management has no idea what is going on. I have been going to Spur N1 city for a long time,the service has dropped tremendously from before. No one seems to care. The other waiters walk past you and just look at you!!!