I recently blocked a phone number on my account last Thursday (June 6, 2019). As of yesterday, I started receiving this message every time I sent the main account number on my VZ account and my job's cell phone number and that is the message that I get. I have a LG Revere 3 basic phone. Power cycling and pulling the battery does not resolve the problem either. I have not made any other changes to my account nor signed up for any subscriptions.