I get calls from then all of a sudden every day between 4pm and 7pm. They call, and even if i answer, there is no one on the other end! When i try to call back, i sit on hold for a long time and then i eventually hang up. If they are trying to sell something, they arent doing to good, because i have no idea who they are.

I get this recording when i call:
"thank you for calling. Please hold. Your call is next in line"

And then i wait.