Keeps calling and hanging up

Telemarketer doing a survey called twice in a row. I tried to call back but it said I can't call from my cell phone I need a lane line to call, so I called from a landline and it gave me an out of order message.

They called me too. I asked them to take me off their list and they declined.  They said I have to take the survey first.  I told them I don't want to take the survey.  They keep calling me now.  Annoying.

This number calls a couple of times each day looking for my son. Claims to be a survey.   Please make it stop!

I called the number back and it is the Frontier call center, 411 information......so I was told, supervisor told me they can't make outgoing calls there.  I get at least 2 calls a day from this 612-555-1818  and there is never anyone on the other end. Tired of this BS
Why do I have a damn landline??/