I have been getting all kinds of calls from different countries and I don't answer because I was scammed before so now I check all of these numbers to see who they are and thanks to Google its not hard to see who is scamming and not.
Automated system stating that it was PC Mastercard and it asked if I had made a charge of (said $ amount) asked me to press 1 to verify the charges an asked me to confirm the card #... Hung up and looked up the number and found out there are tons of people who have experienced this aswell and going back 2plus yrs! Calling 1800 # to block my card and report it