I've gotten 19 calls in 48 hours from 416-654-9839 on my cell phone. The message is always the same. It sounds like an automated business directory e.g. to reach the person you want, dial the extension and press star, except the message is in French (my French isn't very good, so I'm not sure what the message is saying). It's very annoying because the call woke me up this morning. Two days ago, I got about 15 calls in about an hour. After the first three, I had to turn off my phone. When I turned it back on in the evening, I saw that I received 15 messages from that number.
When I tried various free reverse phone look up services, it's a landline originating on Adelaide Street east of Bay Street in Toronto. One lookup said that the number belongs to MTS Allstream, although when I try to find out more about the company, it seems that  they are in Manitoba and don't have Toronto offices. Besides, they are a Telecom service (I guess like Bell) so may not be responsible for the calls, but instead a client of theirs.

I got 20 calls from the same number , I don't know French and don't understand the concept of annoying people so many times