Voice Mail Message Telling Me I am Eligible for a Free Computer, Flat Screen TV and Printer.

This number has been calling me just about every day for the past couple weeks.  They are letting my know that my warranty for my car is expiring and this is my 3rd and final warning.  I always hold to talk to an agent, but once I get on the line to tell them to stop calling they hang up on me.  I finally called the number back a couple days ago and there is a message saying if you would like to stop receiving this call enter your phone number.  So I did.  Now I am being called by not only this number, but 231-732-2563 and 269-768-2399.  I am really upset about this.  I dont want to change my number...I have had it for so many years.  Im not really sure what Im going to do.

Dont do anything- I have a 2008 Toyota Tacoma, brand new and they call me at least three times a day.  You can enter your number to be removed which does not work, you can also wait and talk to someone and they ask year make and model of vehicle, once I asked to be removed and they hung up and the next time I told them my year make and model and they hung up again.  I am registered in the do not call registry but continue to get these calls-  does anyone know how to make them stop?