Ferrero Rocher — Biscuit was not that crisp

Bought a packet of Ferroro Rocher Chocolates from a nearby store worth Rs 830. The quality of the product was not that good as it was expected. The biscuit was not crisp and was able to see small particles of sugar in every piece. The MRP on the product printed was 1800. I was very disappointed receiving that bad quality chocolates of this very known brand. Please let me know what to should be done for those chocolates. Could you replace those chocolates.