If your Mastercard® has been lost or stolen, here are 2 ways to prevent any fraudulent transactions.
From your web browser:
From the National Bank app:
If you lock your credit card, you’ll no longer be able to complete
any transactions with it. You also won’t be able to use it if you
request a replacement card.
Travelling outside the country?
Call us to check if we can replace your card while you’re outside the country:
You can also contact Mastercard Global Service® at the local number of the country you’re visiting. Your call will be redirected to our customer service department.