I had some crazy drunk woman calling me at 1:00 or 2:00 in the am every night for a few weeks - I'm sure she thought that I was someone else, but she wasn't coherent enough to spit out a name...... Made sure that my wife heard the voicemails (hey honey, get a load of this! hee hee hee....it's your girl-friend!) then I deleted them. No reason to hang on to them once I made sure Mrs WBill knew what was going on.
For you and me, that makes perfect sense. For a guy running for President, not so much.