I have had the same issue.  They did give me a contractor's number however.  I am going to file a complaint.  Anybody else out there have an issue with this?

What is an external call blocker?

Another call from these jerks.  No ID, no message.  Just aggravation.

Got a call from this number on my cell phone.  Supposedly from a home repairs company doing work in our area.  I told caller this was my private phone and I did not wish to receive sales calls on this number.  He responded with "aren't all phones private?"  I said to please not call me again and he continued to argue with me about this.  I hung up to stop the call.

A call blocker is something you hook up to your phone and when an unwanted caller calls, all you have to do is hit the block number, they will never get through again. You can even block whole area codes at once. The one I bought is called Digitone Call Blocker, cost about $100. but worth every cent, as it has saved me much aggravation and stress putting up with all these bottom feeders who call all day & night long.