Just got the same call with the same message. Interestingly, I was here and the phone didn't actually ring. Glad I saw this page and didn't call them back.
It's the BBB's sales people trying to scare small businesses into paying thousands for accreditation. The BBB is a not-for-profit, PRIVATE COMPANY which often pretends to be a government agency in order to trick business owners into giving them money. If you have received a call from these crooks, don't call back.
My one-man small business was called by 206-431-2222 and they left this message: "This is the Better Business Bureau. My name is Steve Hughes. This message is for the owner of the company. Please return my call at 206-431-2216 extension 1:31. I will be in my office until 4:00 PM. And again my number is 206-431-2216 extension 1:31."
If you talk to them, ask: Are you a government agency? Are you a consumer watchdog? Does your "business grading" rate the actual product and service? (Hint: the answers are all "no".)
More: http://business.time.com/2013/03/19/why-the-b ... lf-a-bad-grade/
It's too bad, too -- a long time ago they were useful.