I don’t know about other areas of the United States, but in California when you see a marketing call on a land line you can just press *77 and block it. On a cell phone, it’s even easier to block a number. Marketers use a local area code to try to get people to answer their phone these days, so blocking stops those automatic calls.
i get them on my landline (thats a phone thats connected to your house that you cant take with you!!) and i do the same, i always ask them "how am i, am i in hospital, will i be okay"! or sometime i say, "ill just get her" and leave the phone on the side till they hang up!!
I always ask about their most expensive plans and offers and babble on for a half hour making them think I’m gonna get it and then tell them to fuck off and hang up