This number is most likely from HYDRO ONE in Unionville, ONTARIO. Unionville is a small community near Markham. I believe this number 'may be' an automated calling service used to notify Ontario residents of up-coming power shut-downs while Hydro Ontario does maintenance work in a particular area.

BOMBARD WITH CALLS  GRAMA NEARLY FELL WHEN HANDICAP NOT EZ 2 GET 2 PHONE ON TIME... NOT A FIRST TIME OFFENDER!