Just a silent or hangup call.

Receive calls from a toll free number and then when called back to check we are charged an international call fee.  We are on the DO NOT CALL list but apparently it doesn't matter to this company.  I usually do not answer unsolicited toll free numbers, but when we receive numerous calls from a particular number I sometimes check to see who they are .  Do not do this as we have been charged international fees on our phone bill.

Received a call while driving and there was no one on the other end.  The Caller ID indicates that the origination is in Canada.  I do know that a lot of fraud is now coming out of Canada, targeting people here in the US.  The most often used is by mail and includes a large check that is drawn under a legitimate company name and a phone number in Canada to call to inquire how to get the money... which involves sending money to them for "taxes" on the "winnings"...

Though I have tried to "Call Block" this number through ATT, the service will not allow me to do so!

i didn't answer the call.  It appeared they left a message, but when
I went to listen to my messages, there was nothing.  just a blank.

I keep receiving this call. I called it back and it says the number is disconnected.Ottawa  ON  (613) 216-2172 appears on my caller ID

After pick up the phone no talks, When I called back says mesage box is full. so, so aggravating!@#$%^&*