Spam text messages sent from a gmail account via vtext.com cannot be blocked, apparently not on my account anyway. I’ve call tech support numerous times, tried using the Blocking feature through my account, added Smart Family (which increased my bill) and still continue to receive spam text messages.
After looking through this site this has been a problem for years. You would think Verison would make this a priority. Why doesn’t Verizon and Google disable this feature? I guess if you follow the money you’d have root of the problem.