i live in toronto
this number just called me and hung up on the answering machine

Canadian Government should awake from deep sleep.They are not doing much enough in such matters.People  are simply harrased by such telephone calls.In this technological age, it is not hard to find out culprit/s.Only powerful "will"is required from those who are sitting at the helms of affair.( I mean Ministry of Information).

I received a call from this number, but oddly in the name field was another number which could be traced to Nigeria.  Think this phone number is being used for some purpose that is not good.Also, be aware that area code 780 is northern Alberta, Canada.

The best thing to do is block the number. There are a few ways you can do this:If they're calling your landline or cell phone (not a smartphone) call your service provider and ask if call-blocking is availableIf they're calling your smartphone, look on your screen for an app market icon, click on it and search for a call-blocking app. There should be several available.