Call & complain to this Gov link
https://www.lnnte-dncl.gc.ca/pfplin-fccoin-eng

Kind of strange - but this number called us 3 times yesterday (answered it the first time and we identified them as a telemarketer, but husband couldn't remember the company's name). ?We hung up on them mid-way through.  They called back at least twice after that within a few hours.  Today, they called 2 or 3 times again.

Calls at least once a day. They almost never leave a message. The one message they did leave was a woman saying "This is harassment" as if she was describing what it was she was doing. Weird.

They called me once two days ago and three times yesterday. All four times they stayed on the line after getting my answering machine. I could hear someone breathing (not in a creepy fashion, just breathing) and some activity in the background. They hung up after 10 seconds or so each time. Very strange.

Call & complain to this Gov linkhttps://www.lnnte-dncl.gc.ca/pfplin-fccoin-eng

Telephone survey, purportedly about air quality, although few questions deal with actual indoor or outdoor air quality issues. Caller identifies self as Ivan, company as Sterling Solutions, doing survey in Edmonton and Calgary areas. Says you may get a call back if you have won a prize for your participation. VERY STRANGE - likely scammers or trying to identify homes they can break into.