By contacting Revolut support. How can be found in the linked post below.
Also on the back on the card there should be a phone number to call to get the cards blocked. +44(0)2033228352
By contacting Revolut support. How can be found in the linked post below.
Also on the back on the card there should be a phone number to call to get the cards blocked. +44(0)2033228352