They people are very abusive and try to do anything to take your Credit Card, Account & Social numbers. Please report the calls to donotcall.gov and here.
I never answer my phone if I do not recognize the caller. This is actually a calling card company's generic phone number for calling cards. I did some digging and this number could be used by anyone trying to get a hold of you. This is a generic number used to bypass privacy managers on telephones.
The man that called asked if he could leave a message with me and when the person answering could not find a pen, he asked why couldn't they get up and find a pen because they answered the phone. This was very rude and they have repeatedly called back!
Call came in from Kern Medical Center in Bakersfield, CA. When asked why they have a out of the area number, I was informed that the numbers are randomly selected from a bank of numbers.