Also got a call from this number - didn't recognize it and did not answer. Found complaints on other sites too. Apparently it is for duct cleaning, but per one complaint this month, seems somehow suspicious. Glad I didn't waste the time to answer.

Yes it's for air duct cleaning, It's been going on for years. One of the reasons why they get away with it is. They call from India and they spoof local 416 and 905 numbers. If you call the number back this is why you get the message "This number is not in service." Last night the CBC Marketplace did a 2 part show on
telemarketers. Here is the link http://www.cbc.ca/news/business/story/2013/01 ... emarketers.html
Next week is part two of the show.

Getting swick and tired of getting air duct cleaning calls constantly. This is one of them

Creeps called at 8:27 a.m.  No one talked and phone hung up.  This number shows up a lot on my phone.

Sunny from Air Duct Cleaning Services called.... I told him I don't need to have any ducks cleaned because I am a vegetarian.  He hung up straight away.