taking advantage of trust

Bought mixed veges on the 15th and when I wanted to cook them I checked the date,they were expired (sell by and use by date 14th July). Called the store and the gentleman asked me to come in,went in on Saturday by the customer service department and explained to the lady. All she said was \do you want exchange or full refund". Its not really about the refund but the trust I had that Woolies makes a difference and they sell quality. Every one makes a mistake but not with people's health and the fact that no one apologises for it and for me taking my time out to show them their neglegence.same day the rude gentleman by the cashiers who doesn't even acknowledge and greet me doesn't even tell me I left my chicken so clearly he's not taught to check histill area and ask if that all or thank you. I called the customer care line same day 20th around 16:53 still no feedback for this complaint.this retailer is really taking advantage of our trust as no one care to deliver on the promise"""