When I called these folks to take me off their list, I thought to myself that they're not going to do what they had promised, like all the other ones out there.  But so far I have not heard or received anything from them.  Fingers crossed...

I *67 and called the number.  They're a service provider who run campaigns for various clients.  I'd normally be skeptical about it, but this one I trust.  If you call the number there is an option to take your number off their list.  Hopefully they will not call again.

Don't own or even thinking of starting a business, so I've no need for what they're selling.  But at least their system has taken me off their calling list.  They better not call back... although it's been 2 weeks now.

After I told them to take me off their list, I have not received a call from them since.  Now it's all peaceful.