Finally was able to answer the phone and catch the caller. Claimed it was Consumer United calling on behalf of multiple insurance agencies regarding a recent request online for car insurance. I did not request car insurance. They had some of my information correct and some that was completely bogus. The rep was very nice and claimed she would permanently remove my info from their database and place me on their Do Not Call list. We'll see.
I asked the rep for the business address and this is what she provided me:
Consumer United
31 Saint James Avenue
Boston, Massachusetts 02116
469-888-5383