I personally think it is a collection agency... and they don't want to let you know.  But who knows..... if they can not tell me what it is concerning then they don't need to call here.
mine was from someone named Lisa Ford.

He was a debt collector

I got same call from a Lisa Ford...only left her name and number.  What these places fail to realize is that my phone is for my convenience not for the convenience or use of other people. If they cannot leave a detailed message then they are not going to get a return call nor will I answer any call that comes up as "unknown".  Reveal your identity or you don't get squat.

I had a call today from Lisa Ford stating for myself or my husband to call said it was important, I called the number this evening and no name for the business, just hours and asking to leave a message. If you are running a business and can't give a name I can't leave a message.
came up priviate on my phn so I will not answer those calls.

I received a voice mail from this number on 11/30/11.   "Please call Lisa Ford".   I called the number and got a recording stating only their hours (they were closed).     They can just keep on trying because if they can't even give a company name they don't deserve the courtesy of a return call.