Try using reverse call at 411.ca. They say it's a company in Brampton,ON.

I got a call 2 min ago, silence only, then I hung up after 30 seconds...nuisance !!!

all u people actually let me spill the beans for u  and tell u the mistery behind this number i received one such call  offering me a new cell ph with a new number first i was a bit sceptical abt it but this guy wont take his name told me evrything abt this number actually this number is for a call centre  outsourced  frm the dealers of solo to them and it is not a scam i signed up with them received  my ph and using the services and quite happy with it. i know it is phrustating at times but they are just doing their jobs.

This number calls me, I say hello many times, I hear someone breathing, but no one talks.  Then I wait and ultimately he/she hangs up.  If this is a legitimate call centre, then speak.
The people on this report site who say it's a legitimate telemarketing site for Solo cell phones are obviously trying to dissuade us in reporting this number.  This is bogus.

Called Tuesday, April 13, 2010, at 7:34 p.m.There was just silence on the line.They waited and listened saying nothing.You could tell someone was there.The number that displayed was (905) 595-4542.  According to the internet this is an unpublished number, for a landline, in Brampton, ON.Stop calling me Brampton!  I am in Sarnia.  I don't know anyone in Brampton nor do I care to!

I got the same message !! solo,, Free phone and minutes,,, I called back 5 times ,, Just a message and they  hang up the  phone,,,, A pain in the butt,,, Wish i could talk to them lol,, I would give them a piece of my mind,, My Mother's 90  and these call often wake her up during her naps!!!!