Keeps calling.  No messages left.

Called yesterday at 9:51 pm left no message and again today at 5:05 PM and left no message.
They are going on my blocked caller list.

This #610-628-2268 called me at 6:10 p.m. yesterday and 6:11 p.m. yesterday left no voicemails and then called again today at 7:07 p.m. and left no message again

Keep getting calls from this number.  They never leave a message.

Most likely a political survey.  You may as well embrace the political calls as there is nothing you can do about other than wait until November 8th is over.  You'll only waste your time and blocked call slots blocking these calls as these scumbags, like our scam call buddies, only use a number for a few days and then use a different number.  By the time November 8 gets here, you'll have an entire phone book worth of blocked phone numbers.