PS4 damaged

I purchased a ps4 on the 8/11/14 paying r6000 on my makro card and the balance cash. It only has a one year warranty so i chucked all the stuff regarding it out(original packaging and receipt). Now it turns out when my partner phoned regarding where he can take it to repair it we can take it back for replacement? We only picked it up now that its not working because we do not play with it very often.... I do not have any of the stuff because I was told it is a one year warranty. How does that work that they can now take it back and the warranty is longer? Why can they not trace on my makro account that I bought it? It is very poor customer service and false advertising how they say it is only one year and then they tell us we can bring it back.