Got a call from this number. Caller ID said "not available." Caller left no message. Called the number back (blocking my number) to see who it was. "Your call cannot be completed. Please check the number." Now I've blocked this number.
Received two consecutive call on 23 Sept 2013.. First call was a 'live' connection but no voice or recording from other end of call despite several "Hellos" from my end. Phone ran again immediately after hanging up from first call. Same results (no sound / reply from other end).
No calls since then.