They are trying to sell apparent air quality improvement products.  They do a survey at your door regarding air quality in your area, then they call you and tell you you've won a prize in a draw.  The catch is that when they deliver the prize, they want access to your house in order to do a demo on a product. I told them that I didn't want anyone coming inside of my house, but that I would be happy to listen to them on the porch, and she hung up on me.   Be very aware! Total snot-nosed telemarketers who act like 3 year olds when you tell them no.

I just got a call from this number but I missed it. By reading the below messages written by people, I safely assume that this is a scam. I won't answer the call from this number in future. Thank you.

why not just ask them to stop calling?

You have to tell them to remove you from their calling list.  If you just say "dont call me"it won't work.

First received survey call, later received call indicating I'd won a "daily prize" and was now eligible for a $20,000 prize for taking survey. When they indicated that it would be personally delivered along with a sample product they were selling, I declined the prize and they abruptly hung up. Very rude. I called back to indicate my dissatisfaction with such rude behaviour. Very rude. Very suspicious. Avoid answering tha number.

If you receive a call from this number and they won't stop call (604) 520-1742 and ask to speak to Micheal Devlin. He is listed as a president of the company with the BBB. The other presidents are listed as Kelly Murphy and Daryn Murphy. They have a phone number listed as +1 800-834-6850. Spam these numbers and get these people off our backs and let them know they can't harass us at home.