Cadbury Dairy Milk — Dairy Milk Silk oreo

I purchased Dairy Milk Silk oreo at Bangalore on 15th Sept 2026 in one of the pharmacy near Nimhans hospital bangalore Shree Balaji pharmacy
for my son who is 8 years old and kept in the fridge
The next day my son wanted to have and when i opened some spoiled oil smell was coming out of the chocolate and when i removed the chocolate from the rapper oil smell was there completely through out the chocolate them immediately i saw the expirty date it was 2027 . Luckily i have the bill of purchase