Am getting repeated calls from this duct cleaning firm despite being on the do not call list

Whoever they are - they called here mid afternoon.  They left no message.  Very annoying!!

It is the AWFUL duct cleaning scam people AGAIN!!!  They call us several times a day.

Duct cleaning...so they claim.  I've played around enough with them...now I have a whistle handy for the next time.

called here yesterday- no messagescam or telemarketer given now there are at least 3 of us with same result

Got another call at 8:13 p.m. 24/4/13.   First call was on 17/04/13Display screen says "unknown name". I didn't answer it -- as it was an unfamiliar number,so had to be a telemarketer. :(