This number has called 3 times in the past 2 hours.  Unknown caller is displayed, I don't answer but it's getting quite annoying.  Been receiving calls from this number for the past week.

seems to call each day in afternoon.  doesn't leave message, hangs up just as machine kicks in.  anyone know who they are?

Yes! After bearing through those few calls today without answering, I decided to call them back late at night.
1. To piss them off with a late night call..lol!
2. To see if they have voicemail..and they DO!!
The ladie on the Message named they're company..
They're "The Donor Cure Centre for Artheritis in Canada"
...So, I figure that they've got Telemarketers calling non-stop to ask for Donations or something! LOL! Solved the mystery of the annoying caller! ^_^

Rec'd a call from 416-849-4945 today at 2:11 PM
No answer on pick-up and then they hung up.
I suspected it was a sales call;because I'm on the Canadian "No Call" list I'm anxious to report offenders.
Decided to make a Skype call to the number and discovered that the number belongs to the Arthritis Assoc.
Charities are exempt from the no call list.

Just called and no tone or sound on the other side