Male said he was from Visa/Mastercard and wanted me to confirm if I authorised a payment on my card at 3.00am. Very demanding that I confirm. I asked a number of questions but he kept interrupting asking me to confirm the authorisation. I said I would speak to my bank manager, he said he could put me through to my bank manager but first I needed to confirm Yes/No if I authorised the payments. Definitely a scam. I hung up. Do not answer!