We got calls from the number 647-767-00XX regularly.
It looks like they try to force people to have their clean service utilizing people  weakness mind.
I heard that The company does not have government taxable receipt.

I get the same calls. I hang up h keeps calling back. 6 times in a row. he is now using (647)-767-0018. I did not get the name of the duct cleaning service.

Should be a way to fix this guy.... calls multiple times each week and late at night, after 9pm and after 10pm.

After receiving for the past 2 weeks, 2 calls a day to clean my Ducts and I continuely tell HIM that I have had my Ducts cleaned recently and not to call back. But he has stated that he will continue to call me until I take his services. I then told him to "FCK off". I have decided that if he does call again, I will make an appointment to have the cleaning done and when I know they will be pulling into the driveway, I will be pulling out. I have called the number back and to my surprise, it says "that the number does not exist".

This number calls our house on a regular basis. The man who calls is EXTREMELY rude. He is from an air duct cleaning service and after numerous occasions in which we have instructed him not to call back, he continues to call.

I'm on the DNCL, and get calls once or twice a week regarding duct cleaning services.  This time was from Adam's Home Services.  I say no, thank you, I've gotten several other calls already and I'm not interested.  He is persistent.  I then inform him that I'm on the DNCL.  He then guarantees that I wil not get anymore calls from any company if I go with his.  I ask him how he can guarantee this if it's not his company calling all the time.  He says if I don't go with his company I will keep receving calls.  I then tell him then it must indeed be his company that keeps calling my house.  He repeats his guarantee. I say "no, thank you" again and he tells me to have a good evening.