What happen to my lunch ?

I bought a sultana butter cake from safeway yesterday and thought of having it for lunch today.  Before I even have the opportunity to try the cake out, it was already molded. $#@#%^$%^$^…. there goes my lunch. arghghhghg .. pay 4 bucks to safeway to buy a molded cake. when i saw the expiry date only I realize that the cake expired on 28 October. Should have been more observant on the expiry date.