We get calls from this number sometimes as frequently as 5 times a week.  Most of the time there is no answer.  A few times we have spoken to someone who says they are from the cancer society or the firemen's association selling tickets for a magic show.  When we get a person we asked to be taken off their call list.  
We've decided to answer and then hang up as soon as it connects.  Feels rude but this is a real nuisance we are trying to discourage.

(604) 855-7584 calls me many many times a day!

I have been receiving calls from this  # several times over a period of days @ differing time  ..comes up private #  tried calling  back  and receive a strange tone sound.

GOT A CALL FROM ABOUT 10 TODAY SAID HE WAS FROM VISION  I THEN WENT TO GOOGLE  TYPE IN VISION THEN (604) 855-7584 THEN GO WENT TO MICOBLOG OR CACHED AT LOT OF STUFF IN THERE

Someone phoned looking for my wife but wouldn't leave a message and said he would leave her a message on her cel. she did get a message on her cel right after but the number showed up as something different but ehen I described his voice it seems like the same guy. I agree with the person who thinks it's a default for a blocked number...

I get a call from this number everyday.  person on the end says they are calling form rogers and its a customer service courtesy call.  I asked them to remove my number from the calling list as I don't want to receive theese calls.  the paerson twice said they will do and won't call again but I'm still receiving these calls.  I think its fraudulant.