Received a call on my work line.  I answered as I normally would for a business call.  Nobody spoke on other end and call was disconnected after about 10 seconds.  Thinking it was a business related call, I was curious and redialed the #.  Connected to vm that advised if I wanted to speak with a rep to press 1, removed from call list press 2, leave vm press 3, for other questions press 0.  If you press 1, the call is disconnected.  If you press 3 or 0, it puts you back into an endless voicemail loop.  This is nothing more than a phishing scam for telemarketers to "locate" valid phone #'s.   Requesting to be removed from the call list will do nothing more than confirm that the number they called is valid.