If you hit the number 8, the computer will tell you that you will be removed from their list. Most automated system use the number "8" you might want to poke all the numbers see if it may be other than the 8!!
Been getting daily calls. Recorded female voice asking to speak to someone that doesn't live here. Called the number back and spoke to a professional sounding male that stated he would remove the number from their records. Seemed very polite.....we shall see......