These folks call every other day or so, a couple of times a day. The call is from Killeen, Texas. I work in that city, but work-related calls would have the company listed on the Caller ID.
These people call far to often, not giving information on who they are or the reason they are calling about. If you call the number back, you will get disconnected as it won't accept incoming calls. I am going to block them from calling again.