called and hung up

Called and hung up. What's the do not call list for if not for spammers?

spammer

Just called my mobile which I've previously added to US Do Not Call list. I'm so sick of multiple spam calls per day. If you call them back all it says is "Hello thank you for calling. If you would like to be removed press 1 now".

Left a recorded message about needing to speak to "the business owner" about claiming my online business listing, and how "the business owner" will really miss out on connecting with all of these customers if it goes unclaimed, and the usual BS that goes with that sort of scam.