I figured out how to block incoming calls/txts from a phone number in spam controls. What happens if they try to call or text? Are they aware that the number is blocked or does it seem "normal" except I don't receive anything?
Blocked individuals who call a customer will hear the message:
"Welcome to Verizon Wireless. The number you were trying to reach has calling restrictions which has prevented the completion of your call."
If someone tries to text you from a number you have blocked they will get an error that the text failed to send. You will not receive any notification that a blocked number attempted to text you.
Taken from MorganB HERE and HERE