I purchased a used GM car.  It came with warranty remaining and I got locked into marketing by OnStar and SiriusXM Radio (this one is owned by NFL Properties LLC).  They have flooded me with marketing SPAM (all email with one snail mail item).  SiriusXM has their call center at APAC in Mt. Joy Iowa (north of Davenport).

This caller was very curtious, listened to me, and cancelled me out of any future marketing for their product, which I told them I DON'T WANT (hey, it is my hope they cancelled me out of their marketing efforts).