this is an example of the parasites using computers with a Skype like setup for VOIP phone calls using an unused phone number to appear on your display as if it is a real number... then the "machine dialer" continuously dials and "hands-off the call to the boiler-room attendants to sell the crap out of you on stuff that has nothing to do with Canadian credit cards or other crap they are representing... THERE IS NOTHING THAT OUR PHONE COMPANIES OR GOVERNMENTS HAVE FOUND AS A SOLUTION TO BLOCKING THESE "TIME" PARASITES FROM US... one of the best things to waste their resources is to fake going to answer the door or fake talking to someone in your room to keep them tied up and not making money... there are many other strategies to waste their time and money...
Trying the phone number will verify that the number is not assigned...