I'm on the do-not-call list and nonetheless get charity/political calls on a regular basis, more frequently since the past year with all its election fundraising.
My wife has also gotten a recorded message on her phone, "Hi, this is <name>. It is important that you call me at <800 number>." I suspect this is an opt-in ploy; if you return the call, doing so implies consent to receive calls from this agency/person.
On the other hand, I've gotten telemarketers to scream (before the do-not-call list). My wife retains the use of her maiden name; for the sake of discussion, we'll say it's MacGregor.
Telemarketer calls, assumes air of casual friendliness, asks to speak to her.
"May I ask who's calling?"
"Is this Mr. MacGregor?"
"No. May I ask who's calling?"
"This is Jim from <company.>"
"And what is this call in regards to, Jim?"
"Is this Mr. MacGregor?"
"No."
"Then I can't tell you." (Note the high security in use here. If I *had* said I was Mr. MacGregor, would Jim spill his guts?)
"Well, Jim, unless you tell me what this call is about, you can't speak to her."
"It's a private matter."
"Sorry, Jim, you'll have to tell me what this call is in regards to."
"Are you Mr. MacGregor?"
"No."
"Then I can't tell you."
"Well, Jim, unless you want to stop being evasive, I can't help you."
"I'M BEING EVASIVE?!?!?!"
<telemarketer hangs up>
For whatever perverse reasons - perhaps they're assigned x numbers in a given area, Jim the Telemarketer calls back the next night, at about the same time. I answer the phone (which I routinely do after 9PM).
"May I ask who's calling?" I say, even though I recognize the guy's voice.
"This is Jim with <company>," comes the reply. Clearly, he's taken his Zoloft.
"And what is this call in regards to?"
"Are you Mr. MacGregor?"
"No. We've been through this already, Jim. Good bye."
<I hang up>
Yet another person called the next night. I guess Jim needed a night off. They didn't get past the screening, either.
The calls stopped. Guess it wasn't as important as they said it was.