Number called me 3 times...fax machine beeps when I answered. I blocked the number using my iPhone, and within minutes got a call from a different number (314-290-9000) with the same thing. Blocked that number as well, and waiting to see if they will jump to an even different number, and try again!
This number has called three times in about 20 minutes, always a beep like maybe for a fax machine. After three misses, you think they would get a clue and call from a land line or cell phone.