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.

Received a lot of call from this number.sone one says Calling from TopLine Duct cleaning. AND HE GAVE HIS NAME AS MOHAMMAD TALHAH. TIME AND AGAIN RECEIVING CALLS FROM THIS NUMBER. A NUISANCE

Unknown caller

This is seriously annoying, today I got a call from +40555600842 on my cell phone at 11:09, I was asleep, luckily with my ringer on very low, obviously I didn't wake up to answer it, at 11:10 and 11:11 I got calls from a private caller, then an unknown number at 11:12, at 11:14, our friend at (416) 646-3601 called, and then at 11:15, a caller from 662-505-2872, I finally woke up at 11:18 when another private caller called. At that time I looked at my phone and saw all the missed calls, no messages though. How do these people manage to find my phone number, and why do they feel that calling 7 times in 7 minutes is going to get a response?I tried to trace the numbers, the unknowns and privates didn't work out, but the first call was from a caller calling through Romtelecom in Romania, but calling through the provider from outside of the country. I literally don't know any person or have any connection to anything remotely Romanian. The area is Caras-Severin, which includes Transylvania. Perhaps it's Dracula.The next number that came up, the 662 number originated from Mississipi or Memphis, Tennessee. I'm a Tennessee Titans fan, but otherwise I have no link to either of these places either.Finally, of course our favourite caller, the one at 646-3601, called in between.Has anyone received a REAL phone call from any of these numbers?

i posted an ad  as a mobile phone repair guy i got a call from an unknown number.. i told the guy to call my house phone. he called but hang up after the 3rd ring, i thought that was odd so i google the number and found this sitealso, when i dial the number i get a dial tone you know the kinda u get when u just pick up your phone?so i am guessing is some kinda phone scam!!!

i got a call just earlier today, a person claims to be some sort of mob from my country (taiwan) saying they have 2 brothers who are here in CANADA that need money to go back to the country. He asked for $20,000 CAD so they can go back.
Even harassed me that if I dont help out.
Blood will be shed
pfft
gimme a break
economy is bad and people are trying every possible way to make money