Hung up on my answering machine.

i too got a call from a (blocked number)Jim at this same number. He mentioned my name as if he knew me and left this same phone number via voice message and asked that i return his call. I do not know you jim. Go away. You're creepy.

'jim' called several times, leaving a message at 2:30am (providing his callback number) and then called again around 10am.  
i answered the 10am call.  he mentioned me by name and said i had given him my number when we met several weeks ago near my home, which i had not.  he then asked where i lived.  i hung up.
as i do not give out my number or post it anywhere online, i would like to know how he got my information.

got 2 calls on cell phone from an unknown jim at this number.  2nd time he mentioned me by name