The number seems to be a cell phone number when you reverse trace it according to a few good websites.  It shows up on caller ID as COLORADO.  They have called twice so far in less than a week.  On the message, the person identifies himself as being with the IBM Rational Software Team and is following up with me (by name).  I think that they are prob confusing me though with someone else in their database. But, I am a tad bit suspicious since I've had no relationship or connection with IBM or any of their products...  And, I believe that a reputable company such as IBM wouldn't be masking their identity under a cell phone-like cover a/k/a COLORADO.  Very strange.  Hence, this post to see if a trend/scam of some sort is developing.