I personally, and the company I work for, has had this same pattern happen over and over again for at least 5 years running in our collective memory. We've made a file because we've had so many people in our company assaulted by this smarmy group. Apparently they've developed a disgusting process that begins with an innocuous-sounding offer "Would you like a free trial subscription to The Selling Advantage?" You agree and they confirm by asking for your birth date and then the fun begins! They send you the publication which is basically recycled fluff related to marketing and sales. Theoretically you decline by writing "cancel" on their invoice but they don't send an invoice timely - they hope you'll just continue to receive it "proving" you want it. I think you'll eventually get an invoice - but I'm not sure any more! In any case you can't call or contact them or get through to anyone to decline the subscription. Next you get a call from a collection agency. I always consider this suspicious because a respectable vendor would call you first and give you the chance to make good on your debt. Not The Selling Advantage! For whatever reason they seem to think they have an advantage over you and try to scare you or shame you into paying their invoice! I just hung up on the guy that called - but they're used to that. This is their M.O. They expect to do a certain amount of collection I guess? I don't know. My advise - avoid this company unless you want low quality newsletters and harassing phone calls.