this is a common practice in almost all hypermarket/supermarkets....to keep the short expiry/expired itmes in front and move back the fresh items....especially for Dairy products milk, yogurt, laban etc...

also those items in promotion are of short expiry, pack of caramel, cup noodles, biscuits ...before you buy these items please check the expiry/production date...once i bought with the expriry date near to a week or so...

in this case of expired item you should definatly complain since the supervisor didnt took your complaint seriously..