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

these people have called me 14 times in the last 2 days

Said he was from Sterling Solutions asked about air quality and proceeded to asked if anyone smoked in the house if anyone had asthma. He asked how long living in house and asked if anyone what type of work we worked in and if we worked fulltime and how long.Can't remember name. Said might win prize and confirm number he had called me at. Just seem to ask more questions were asked off topic of air quality. My guess is vaccum sales and checking if we can afford the overpriced Sh_t.

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.

23 calls in two days from this outfit.

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.