No one is on the line when I pick up. I put them in my reject list; they still call. How do I get them to stop?

Received several calls from Ontario, CA (613) 216-2172 with no message.  Called back and no company name was given, so I hung up.  Now I'm charged for two international calls to Ontario, Canada, which totaled over $6 with all the taxes and carrier cost recovery fee.It's a scam.

Have received numerous calls also.  I called back from my home phone and got a message that the number was disconnected.  Called from my cell and work phones and got a message "I'm a big jerk and I leave erroneous telephone calls with no messages".  He is a big jerk and he does make erroneous telephone calls with no messages.

Call on caller ID called it back, got a bill for a call to Ottawahull, On

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!

A long-winded recorded message.  I left the phone on the desk while I worked.  After about 10 mins. I picked it up they were just winding down, asking if I would write my congressman, etc. about health care.  Seemed to be AARP or AARP affiliated.