Robo Solar Spammers / Scumbags / Telecriminals are at it again.
These low lives are using a spoofed number, and they care less about the useless DNC list...
They call just after 9:00 AM and don't leave a message. Impossible to block because often the number you see is not the number calling. Best advice - never answer and let them guess if it's still an active number. Worst - Smile Train, (858)281-5397, an example of a good charity that employs nasty telemarketers.