Emergency Services

You're prepared to make the most of your trip — we're prepared if you lose your card.

What To Do:

Call your issuing bank immediately. Your issuer may want to cancel your current card and issue you a new one. Be sure to verify that your mailing address has not been changed.

MasterCard Issuer Security Phone Numbers:
ATB Financial: 1-800-661-2266
BMO Bank of Montreal: 1-800-361-3361
Canadian Tire Bank: 1-800-459-6415
Capital One Canada: 1-800-481-3239
Citibank Canada: 1-800-305-7259
Credit Union Electronic Transaction Services: 1-800-567-8111
First Data Loan Company: 1-800-265-1228
GE Money Canada: 1-800-243-2222
HSBC Bank Canada: 1-866-406-4722
MBNA Canada: 1-800-379-2744
National Bank of Canada: 1-888-622-2783
President’s Choice Bank: 1-866-246-7262
Sears Canada: 1-800-288-9965
Wells Fargo Financial: 1-888-295-0050
Wells Fargo BusinessCreditSM: 1-888-215-9102

If you suspect a compromise of your PERSONAL INFORMATION:

Help for Special Situations:

  • If you’re still in possession of your card but fraudulent purchases have been made on the account, call your issuer to report the fraud and request a new card.
  • In the event of a fraud application being made in your name or if you are a victim of an account takeover, contact the credit bureaus to let them know you’re a victim. A "Fraud Alert" message will be placed on your file. You should also request a copy of your credit bureau report and you should review it carefully for any information that may be incorrect. Contact the credit bureaus at:

    Equifax: 1-800-465-7166
    TransUnion: 1-800-663-9980

Continue to check your statements in the following months to ensure the problem is completely resolved.

  • Report the fraud activity to the proper authorities. Your issuer will advise you if they require that you make a police report. If your Social Insurance Number was compromised, you should report the incident to Human Resources Development Canada at 1–800–206–7218.
  • If you’re a victim of an Account Takeover or Fraud Application, or if you’ve been defrauded due to phone solicitation, report the incident to Phonebusters at 1–888–495–8501. Phonebusters is a central agency that collects information on telemarketing complaints and victims of fraud applications throughout Canada and disseminates this information to the appropriate enforcement agency.

Feel Reassured: Learn About MasterCard’s Zero Liability

Suspected Fraud Emergency Service

MasterCard® Global Service™ Telephone Number Directory

  • Emergency services in Canada
    call 1–800–MC–ASSIST (1-800-62-27747)
  • TDD/TYY for the hearing impaired
    call 1–636–722–3725

We’re ready to assist you 24 hours a day, 365 days a year, in your language.

What is Fraud?