Got the call tonight too from 604-637-0159.  I called the number back about 100 times.  I got through about 20 times and just kept pressing buttons to jam up their lines.  You have to press any number key and then # or *, otherwise it will just hang up on you.  I kept press 3333#33333#3333#.  After 20 times someone on the other end was pissed and picked up the phone and didn't say anything.  I called back 20 more times and still doing it now.  Gonna keep going til midnite.  Good thing about this number is that it is not an automated number.  It is someone's real office or home as they picked up and was pissed.  Guess this [***] is getting a taste of their own crap.  Make sure you do it from a blocked number though.