Who called from 7815950524

As above.

Call ends with "thanks buddy". Caller left a message saying he was Bob Michaels just following up and gave his number to call back.

Received similar message, HOWEVER, he gave his name as "Bob Rogers".....uses various alias'

Just called my work and asked to speak to my boss, he said his name was Bob Miller, asked him what this in RE:  he said a follow up call from a few months ago...Clearly not reputable!

He is a recruiter for different businesses. Says he represents Wells Fargo.

Just received a call from 781-595-0524, saying his name was Robert Richards. He wanted to talk to my boss. Said he is a private investor when I asked what the call was regarding. Said he was following-up on a call several months ago.  I don't think he will get to talk to my boss.