I asked who this guy worked for. Don't remember the company, but it's not affiliated with Google. Google does not sell listings and there is no way to pay for a listing on the first page in a search on Google. Google's robot (Googlebot) scans the web and ranks websites based on a very complex algorithm. Generally, rankings are based on use of keywords in the content of web pages. This is a scam for sure.
I got these calls on a regular basis. With a business phone I can't ignore when it rings and the ID is not specific. I have answered and soon as hearing it's a recording I hang up. However, now I push 1 and as soon as they answer I lay the phone down and let them talk to dead air. Won't stop them from calling, but I get to have some fun at their expense.