I get these calls on my cell phone approximately once every day, the number seems to always be different, same call though. Usually they say nothing, I actually want them to say something so I can mess with them. They have called my work number in the past also.
Received call stating my car was about to fall out of warranty. I once held on and got a real person who then proceeded to hang up on me when I asked who they were...was getting these calls at work now on my cell phone as well.
This is exactly what happened to us at work. Keeps calling with a recording stating this is the second phone call to remind us warranty on our car is up. Called the number back..it is always busy.