2016 Jan 14 rec'd a call purportedly from this number (according to Call Display).
Caller was evidently on a predictive dialer in a call centre (judging from delay in responding to my pick-up).
Caller had an Indian accent but identified himself with a British name (Jack <Something>) and claimed to be calling from the "Windows Support Centre" about a problem with my computer.
When I told him I don't have a Windows computer, he hung up immediately.

hey i got a call from a guy named Jack and he told me sir im calling from Microsoft Ohio, usa, and i told him that I live in Ontario, Canada. So he told me that my computer has been sending some messages to the windows server in Ohio I told him I was a Police Officer and he cut the phone. He also told me to go onto my computer and log into these accounts a bunch of bullsh*t I didnt fall for any of these tricks.

Please note that the people calling you from this number are running a scam. They are not from Microsoft and not calling from the number that is being displayed, that being (416) 252-4054. They are not using real name or real phone number. Block this phone number out and NEVER give them personal information.