Packet of biscuits with only two biscuits

I bought a pack of mini biscuits from Checkers at Northmead Mall when I opened the pack of 5 mini Bakers Eat Some More biscuits I realized that one of the mini packs had literally two mini biscuits inside. The pack is supposed to weigh 40g as per packet but weighs 8g. <br> Barcode on the packet reads: ***