Who called from 7815950524

Caller says name is Bob Mitchell and that he is calling me again and ends with "thanks buddy".  I have not a clue as to who this is.

Caller left message identifying himself as Bob Mitchell and that he was "following up."

Caller left a message saying he was Bob Michaels just following up and gave his number to call back. I don't plan to.

Caller said his name was Bob Michaels and said he wanted to talk about his finances and do some business. Called back but got no answer.

Said his name was Bob Miller and he was following up on a conversation he had with my boss last summer?? Call him back at 781-595-0524. Number shows PRIVATE on caller ID.  Did some research -It's a VOIP line from Mass.  He didn't really want to answer any questions.  Not calling him back, that's for sure.