Boiler room noise and chatter in the background while the voice said that they were a "contractor" inquiring about doing some "work on my home".  Telemarketer.

have two landlines  both rang same time.

blocked

Called 8/28 and 9/1. Caller ID showed "California", the infamous telemarketer name spoof. My phone answered by Sentry robo call blocker both times, which advised calling party we do not accept calls from telemarketers and to remove our number from their call list. Obviously not done.

Same here.  No ID, no message.  Just more aggravation.  And now blocked forever.

Hang up, real classy, just the kind of people I'd hire!