I recently received a couple of calls from this number. Each time they call, I report them to the National Do Not Call Registry. Those of you who are on the DO NOT CALL list should also know that when someone does call you, you can go to that registry and report the number: that is very important, because the registry can follow up on those companies.
Also, if you call the business back, just tell them that you will boycott their business, and you have told all your friends to boycott their business too. Makes me feel better every time.