This is a scam, do not call the number. CRA will never call you like this. They will always contact you by mail. Please refer to http://www.cra-arc.gc.ca/scrty/frdprvntn/menu-eng.html for more information.
This is a scam, do not call the number. CRA will never call you like this. They will always contact you by mail. Please refer to http://www.cra-arc.gc.ca/scrty/frdprvntn/menu-eng.html for more information.