Professional sports whistle kept close to the phone works if you don't have call blocking.

Duct cleaning

Not much you can do about the repeated calls.If you subscribed like I did to the government do not call list you made the same mistake I did. Offshore companies and telemarketers are entitled to our " Do Not Call Information" because they do not fall under so called "Canadian Laws". I was informed that they can request all phone numbers on the Do Not Call list in Canada through the Freedom Of Information Act that our illustrious government made made available to companies outside Canada. Sweet deal Huh!

From over sea call's thay run up your phone bill $$$$$$$$$$$$$$$$$. Thay tap on on your phone line.

I get calls for duct cleaning service. I first ask them if they clean ducts. They say they do,  then I ask them if they clean chickens, there is a pause on the other end, then I ask them how about pigeons or canary's, believe me they hang up.

I have asked and asked them to remove me from their call list and they just rudely hang up and then call back later. This is harassment in my opinion. PLease make this stop.