Received a number of calls without a message from that number. The simplest solution is to just block that number. A block call is available at extra cost, but certainly worth it. Phone your provider about rate.
(I'm sure the fellow is a basket case who, most likely, reads our comments and this makes his day).
Rec'd 2 calls today from this number. 2:02 pm - no message, 3:56 pm - hung up when answering machine picked up. I hope that 'anonymous" is getting its rocks off by these stupid, juvenile calls and is not otherwise dangerous.