Glitch with FaceTime contacts on Macbook pro

I'm having an issue with FaceTime on my Macbook pro. When I type some contacts names in the FaceTime search bar, and select a FaceTime call, it will call a different contact. Then after the call fails to the wrong contact it shows yet a 3rd different contact in the recently called list. So for example if I try and call my son it will dial someone else and then show I called yet someone else in the history. 2009 Macbook pro Yosemite OS X 10.10.2