Interesting swindle. They're trying to sell you something that you don't even understand - supposedly 'search engine optimization.' Of course it's not really Google calling.
A week after this, I got a call also, on my "Do Not Call" listed phone. No message or ID, other than this # and "FL, USA".
Nobody in FL has reason to call me (especially at this number!) but I do get endless calls re Google sales, ads, etc.
FWIW I saw that this number is now listed as of a few days ago on "Who Calls Me" as well, but again, no ID. Junk!