Phoned at 7:55 PM. No message left.
800notes has lots of posts regarding a very similar number (415-991-7603) which also started recently. (Oct 15)
My suspicion is both numbers are being used by the same party. Probably a scam. I don't answer unrecognized numbers.
This RoboCall came in to my cell phone, while I was on a call, from unrecognized number in my a/c. I expected it to go to voice messaging. No message left. Looked the number up here. See that MO is to not leave any message. Or that its a SPAM phony "you've won a Caribbean vacation" ploy. I went to the Do Not Call Registry and reported it.
Please, please, please do the same. The more complaints the more pressure can be brought to these cretins.
https://www.donotcall.gov/ and hit Submit a Complaint green tab. Be sure to sign up for Do Not Call for all your phones, including cell. Thank you. WD