Who is "B PILLS"? Keeps calling my cell phone.

Called my home phone once on 12/8/07.  Caller ID said "E PILLS".  The name and number are probably false since the ANI (Caller ID) can be set to a 10 digit number of the caller's choosing.  In my case I don't think this is a telemarketer.  I may have caught the attention  of a PI hired by my  boyfriend's wife.  (Note to them:  It is an AFFAIR-it has little to do with the club).