This was an automated call which seemed suspicious at first but it was a genuine follow up to my card being declined that day (I hadd forgotten the 2 step authentication process was required). They were confirming thar the transaction was made by me.
They send you a text of transactions (likely not yours) and a 3 digit pin. After they will attempt to call you. For me it was the next day cause they were closed at the time of these transactions which were not mine.