Caller I.D. says "help center." The 774 area code is from Massachusetts. The offending company is actually Affordable Dental of Attleboro. Here is their website:

http://www.affordabledentalofattleboro.com/

The info fill-in form on their home page conveniently does not work.

This is a private profit making company; I have no "relationship" with the company;  and I am on the Do Not Call List so they are breaking federal law.