I found it helpful to learn that so many other people have received a call from the same number, even if they didn't know who it was. Of course, I'd like all information possible, so it looks like they are selling medicine for back pain. Is the person on the line Indian (for those of you who talked to them)? I sometimes get calls from India trying to sell me pills, and they are somehow able to get an American number. I think they use computer software to fake the number. These people know that a lot of Americans want Vicodin or Oxycontin (I know I spelled that wrong).