Fridge with dent on the front door

yesterday the 23 July I bought a fridge at Makro Springfield and took delivery. I then realized after removing the protective material on it that it had a dent on the front door. i have call the store and spoke to the department manager Rico who is refusing to replace my fridge even though the CPA allows me to exchange it. He is telling me i should have not plug it in, and my question to him was what should i have done with all the groceries I had bought knowing I had a new fridge? should i have let it spoil on the table? and how will i have know that i shouldn`t plug it in if i wanted it exchange? I am really dissapointed with the feedback given to me as i have spent my hard earned cash for a fridge which looks like it used item.