I receive several free electrical engineering magazines, so I think this number is associated with updating information for those subscriptions. Still annoying though.
This caller resumed calling me again a few days ago, after a long hiatus. I checked here, then ignored it until today, when they called me just about every two hours until I finally answered. An Indian with a very thick accent told me that they were "verifying mailing address for free security publication." I told them that I had no interest in receiving any publications, and he replied, "But this is free publication. You do not have to pay anything." I told him to stop calling me or I would report them, then hung up.
I receive this call frequently, they hang up and when I call back their recording says that the call is in reference to a publication that I receive or am eleigble to receive.
There must be some reason they would do this. Does anyone have an idea why?