I have a Verizon phone. I am able to make almost all of my calls without any trouble. However there is one person in my phone book whom I am able to text but it doesn’t allow making calls on that number. I know how to block a number from receiving calls, but is it possible to even block a number from being called from my number? Is this what’s happening here? Can anyone out here help and tell me with what exactly is going on with me?