Have received several calls 305-947-2321 which is in the Miami, Florida area.  They never leave a message.  When I dial the number, I receive a recording saying that the number have been disconnected.  How can I be receiving a call from a number that has been disconnected?

After some detective work, I have found that (305) 947-2321 is actually Client Services calling; however, if you call the number back there is a recording that the number been disconnected.  Sneaky, very very sneaky.

FYI, they usually call from (636) 947-2321.