I received a call from them, this evening. I was too busy to get to the phone, and they left no message on my answering machine. They're a little too public to be a scam operation, however, since the call was unsolicited, I've no intension in answering any of their future calls.
They called, did not answer, so I used my Panasonic KX-TG6845 phone and blocked the number from future calls. It will block up to 250 unwanted numbers. Makes days have fewer interruptions from junk calls. K. C.