I have a solution-block them. A free app might already be available on your cellphone. Landline blockers can be had for a minimal charge. See my post on whocallsme for (305) 918-2338 for more information.
Yes, they are telemarketers. Over and over he says, "We're not trying to sell you anything." The script writers have got their act pretty well down. Remember to never say "yes" or "okay" to any question. The answer is always "no," otherwise you are authorizing them to call you again. And again. And again...
I didn't answer the phone but I did call the number back and got a recording that said the call was a telemarketing and if I wished to be removed from the call list to press one and my number would be removed within 72 hours. We will see......
Got call appeared on caller id as NODID starting asking about smoke detectors and then went to inquiry if there was an alarm system in house....that's when I said good bye. BEWARE I wouldn't answer any questions