These characters have been calling several times a week for 3-4 months. I usally do not answer or answer and press 2 to disconnect. It never works. Once I got a live person and asked to be removed. That did not work either. Now I am reporting them to the FCC.
I have received multiple calls from this pain in the [***] company. when you try to call back all you get is a busy signal. I have made a complaint on them as well, but as Tony said probably useless.