To answer the oft-asked "why don't you put your number on that list thing," that list-thing has more holes than swiss cheese. One is that it doesn't/can't apply to callers from outside the country, so I get lots of calls from guys who say their name is "John," said with a two-tone Indian lilt. I tried one time going thru with a call, to find the name of the company in the US that hired them, so I could complain. Nope, it's still an Indian company, with a generic name, that was pre-screening calls before selling information to an American company. No joy there.
The other is from companies that have a pre-existing relationship. That pre-existing relationship can be established with a simple advertising letter or postcard. Then they call. I had one guy call and ask "did you get the material I sent you last week?" To which I replied, "yes, and I threw it away." He laughed that salesman sort of laugh when they don't take you seriously. I hung up.
We used to get more than a dozen a night. There's a service from the fone company that filters all calls without caller id and sends them to the "Privacy Manager." If the person wants to talk to us, they give their name to the PM, which then calls us and tells us the name. If we want it, we accept, or forward to voice mail, or tell them to fu... go away. So now those foreign companies put "0" or "800 Services" as their caller ID. Since my fone shows me the caller id, I don't answer Mr. 0's calls. Or Mr. Services, either.
Annoyed? Me? nah. I get my revenge, more or less, by picking up the phone, blowing into or tapping on the reciever so the computer at the other end switches me to a live person. I then sit there, holding the line open, while the person at the other end says "Hello? Hello?" I had a great one the other day. The guy didn't disconnect the line before he started talking to his super. Unfortunately, it was not in a language I knew. Fortunately, the sounds of a person being trained come across in any language. Query followed by answer. Answer followed by "oh." Or by something that sounded like the guy was doing something step-by-step and waiting for approval. The call was three or four minutes in length, and was most entertaining.