Flipkart — Iphone12 order got cancelled by seller

I have ordered iphone 12 in the big billion day sale on 2nd Oct 2021. Order was confirmed and shipped also. But after 24 hours i got a message that my order is cancelled .

Flipkart is doing fraud in the name of BBD. They are just showing that they are selling at the lowest price in BBD but after that they cancel the order. I just want to register a forgery case against them.
My order id:- OD[protected]

I also raised incident.
Incident id- IN[protected], IN[protected].