Chocolate Gone Bad

<p>Hi I purchased a Cadbury chocolate from Shoprite Ennerdale on 28.05.2016. I payed for my items at the till went home and upon my arrival at home I decided to open my chocolate. To my surprise the chocolate was an off white colour knowing the I did not purchase a milky bar I immediately knew something was not right. I then investigated the packaging and the expiry date was 18.05.2016. Please tell me why this is on your shelves 10 days after expiry. I am truly appalled by this I will not ever purchase anything from Shoprite ever again.</p> <p> </p>