You are very correct sir, I have heard about this by calling the number back and pressing 1 to be removed is what THEY WANT YOU TO DO so they can get into your phone and info, contacts, ect.
Thanks for your website info. I have a limited prepaid flip phone and have been getting lots of robo/scammers calling. I go to your sight now and check the phone numbers and find out the truth, Before I answer. Has saved me lots of lost minutes on my phone.
I then enter the scammer phone number in my contact list and use the NAME: JUNK DO NOT ANSWER. It works great! So, now 706-403-8017 has been added to my Contact List as : JUNK.
Bless you for helping me save my precious phone minutes!