They call every day with duct cleaning services, I just hang up and they keep calling. What can we do?

This number showed up several times since last week and never leave a message.I decided to pick it up tonight (8:30pm for crying out loud).I'm sure he called with a different number before and is starting up calling again!I told him my ducks don't need cleaning and I wash my own cars, Thank You... see how long he'll call back again..how intrusive they are!

Harsssing.

Surprise, surprise!  Is anything ever going to be done to stop these terrorists?

This idiot call and has been doing so for ever, I picked up once he is selling duct cleaning  talks witha a plum I his mouth, why can't he be stoped???????

This number calls my phone a lot. It needs to end!