We have been receiving repeated calls  for many months now , harassing us about home duct cleaning, allegedly from this number (we asked them for a number to call back). However, the caller ID on the phone shows a 760 area code (California), and when we called that number back, it was clearly a call centre. The person calling claims they are representing Cambridge Heating and Cooling, but I don't believe that this is the case. The callers also know nothing about CRTC regulations regarding telemarketing, and have never heard of the national "do not call" list. We ask to be taken off their calling list, but they still keep on calling. I have reported them to the CRTC via their web complaints page, and I advise everyone else who is the target of these calls to do the same.

Got a call from Danial,asking if I need duct cleaning . He said he is from cambridge Heating and cooling. he speaks Urdu( Pakistani Language) googled Cambridge Heating. It is not their number. I asked him to give me his number then he gave me 03343736825 which can not be a phone number.(If anyone knows how phone numbers are.)
Please be safe.

I am receiving calls from this number every morning around 9 am with an offer from Duct Cleaning services. Although I declined the services from very first call, they keep calling. In first 25 days of 2017 they called me 17 times! My number is on DNCL list since 2010. When I told them that they have no right to call this number they F* word me and hung up.