Lindt not what it appears

I recently purchased a premium range Lindt Nuxor product, to share with guests imagine my horror once the box was opened and the chocolate was infested with what looks to be worm larvae and webs of some kind. The product is well within the expiry date range. I have emailed the company requesting someone to come out and inspect the product, I instead received what looks to be a computer generated response that feedback would be given within 24-48 hours. That was four days ago. How can such a prestigious company sell infested product's, Is it because there is no supervision from the government?