Ferrero Rocher — Ferrero rocher packet contail full of fungus

I had purchased a 16 packet box from dmart marketyard pune on 10/9/2024 today when i opened the packet when i start eating the choclate it tasted different when i see properly they have have fungus on it i opened 3/4 pieces all have fungus on it the mfg and expiry date are
Mfg-15/07/24
Exp-3/04/25