Just launch a complaint at https://www.lnnte-dncl.gc.ca/plt-cmp-eng if you're registered with the National Do Not Call List.

just tell them to @#@# themselves with their hose.  they get the point.

This number calls my house every day....a couple of times, regardless of the fact I have been asked to be removed from their list.  They hang up on me all the time as soon as I explain I had mine done recently....I am polite....but regardless they hang up on me.  I do not want them calling anymore....very frustrating.  They have different phone numbers and different air duct company names.  They have said "toronto air duct cleaning' but it changes.

Just got this call this morning. And probably several other times over the last few months. I've actually talked to these do***e bags before too. They are fully aware. I need to get their company number and name to report them to the CRTC.

Same thing, they call, there is no one there, even if you wait and keep saying hello, the computer never seems to forward it to a live human. If I ever get a human, I am just going to go along with it till I get the name of the company, then report them.

These idiots called my unlisted number.  The first time they called, no one was on the other end so I called the number back.  Got a recording saying I could leave a message and it was forwarding me.  Then I got another recording saying that the voice mail box was full.  The second time, there was a person on the other end.  It's a duct cleaning company.  I told them to remove my number from their list.  We'll see what happens.