Anytime peanuts stale but within expiry date

Good day <br> <br> We bought Anytime peanuts and when we opened it it was stale the peanuts have that rancid taste<br> <br> I am very unhappy as I dont see why i pay for something then i must take it back and get questioned by shop owners and then the product is just replaced<br> <br> Its your problem why stale stock is being sent out<br> <br> The expiry date is 06/04/2016 why is the nuts old<br> the batch number is 065DTW2<br> <br> please get back to me please<br> <br> thank you