Originally Posted by
carnarvon
I don't get the OP's story.
Since when do the merchant (FB in this case) flag a CC transaction as "suspicious"?
It is not unheard of from airlines to ask to present the card at the airport at the day of travel for paid ticket.
Even if the CC company authorized the payment, the owner of the card can still claim it is a fraudulent transaction even several months later and issue a chargeback.