I have also been getting junk faxes from this number for a couple of months, sometimes pretty late at night. Caller ID is M cloutier, and what I found on canada411.ca for this number is:
Marie-Josée Cloutier
114 rue Joseph Théberge
St-Mathias sur richelieu, QC
J3L 6C5
I think we should all jam her mailbox with junk mail ;-)
This seems to be her personal phone used to bulk faxes and she gets few cents per call so if you wish to disturb the operation, just try to call her until you get the line. Do not hang, just keep her line busy overnight meanwhile she cant disturb other people.