I think all this flow of numbers, can only come from the phone company itself, as you see them changing phone numbers, and there are a great many phone numbers of them. Who can afford himself to have so many phone numbers, if it is not from a phone company itself, or from a few of their employees.

Have a look at the List of reported phone numbers:
http://800notes.com/AreaCode.aspx/1-888

Got a call from these parasites today at 9:07 p.m. - caller said she was calling from something like "G.S.K. Research" ... so, I asked her what country she was calling from - she replied Canada, so I then asked if she normally phoned and bothered people at home after 9:00 p.m. ... to which she replied it was only 7:00 p.m. where she was calling from ... and then she asked if I was in Ontario ... to which I replied "YES!" and hung up.  It frosts my butt that some two-bit call centre from a different time zone has the gall to phone and harass me at home so late in the evening.  Now I'm going to go double-check and see what the CRTC rules are for telemarketers (i.e. I think there's a limit to how late they can phone ...)

I called them (306) 652-5160) to complain that one of their interviewers swore on my voicemail. He must have been frustrated at my outgoing message, which ends with "God bless you," because he left a message "God bless me? F#@k me!"

This number phone i answered it as it was after 9pm no one on the other line.

Called six times in a row, after I answered the first call.

Is there a way to block this?

We have been receiving calls from this number several times EVERY DAY. Thank you for this site. I called the number +1 866-652-5160 listed above and requested a supervisor, and asked to not be called anymore. He took my phone number and was polite about it. We'll see if they keep calling.