Amazon India — making us fool

I have ordered samsung 970 evo plus ssd 256gb at very low price rs.3020 during the sale on 12th october 2019. My order was placed and i had received confirmation mail from amazon regarding this product.
After that by evening they cancelled my order. Reason shown was we have cancelled your order due to pricing issue.
After that i contacted amazon customer care executive but they told me the same thing and behaviour was rude too like we dont we dont. We cannot process your order. I want that product.