The reason you are unable to call back is that each of these callers is actually caller from a real number but they are Primus customers, so their real number actually gets re-routed through one of many Primus main numbers.My father has Primus and whenever he calls me the caller ID shows one of the many Primus numbers, usually I get (416) 646-3601, but I have also seen others.So basically if you signed up with Primus today as your phone provider you too could make calls randomly to people and they would get a Primus # on their call display.It is so frustrating and Primus should not be allowed to mask the caller ID number.

I got a call from this number last night around 8:31PM and they did not leave a messageAlso from a (416) 847-4999 at 8:35PM

I work for an investment firm and people call from this number constantly trying to get through to the company President.  They say they are from the US Pensions group and have clients that want to invest with us.  When I try to get additional information. like a call back number or their website, they  either hang up on me, or become rude.  They have gotten through to my boss a couple of times and he's said 'not interested', and I've told them as well, 'we're not interested, remove us from your call list'.  They continue to call!

I figured everything out. I just purchased a $5 Global Saver card from waytelecom.ca . Used their Toll Free Access number and dialed from two different cell phone providers Bell Canada and Telus. One showing unknown and other is showing (416) 646-3601. It looks like Mobile providers is spoofing the number for some reason. I can understand, they are loosing long distance business to Way Telecom, but why spoof the number?

P.S.
Way Telecom does offer pretty cheap long distance calls.

hey about this comment:"They said that they were calling regarding duct cleaning services and i knew that it was a scam!! Right after that--they called again ani came up as unknown nam and number."I yelled at them to remove me from their calling list. He called me right back with a private name and a private number and said, "i just wanted to say f*** you." and i told him the same and hung up, he then proceeded to call me back multiple times (5-10 times) and was making sounds as if he was masturbating. He called from several different numbers, so watch out for these:(416) 750-3447(416) 852-7169(416) 598-9326I'm pretty sure their are many more. He also calls from 647 numbers. He also has a south asian accent... did he for any of you? I'm actually getting quite frightened, that i'm being harassed by some freak who could live in india for all i know. I don't know what to do; hopefully the cops can help us out.

They said that they were calling regarding 80% discount at any store services, and want to know my name , I knew that it was a scam!!