Caller: Phising call - Mastercard and Visa Security Department

Indian male scammer identified himself as calling from the Security Department of Mastercard and Visa. Scammer indicated two international charges were attempted on my bankcard at 4AM this morning. Scammer asked if author was aware of the charges.
Author did not confirm or deny the charges but requested the relevant bankcard number from the scammer.
The scammer immediately disconnected the call.