I have a Galaxy S III mini with Verizon and my boyfriend has an iPhone 6 with AT&T. Suddenly today, when he calls me, he gets the message "I'm sorry, this call cannot be completed as dialed." We can text back and forth. I can call him. I can receive calls from everyone else (from including another person with an iPhone and AT&T). Neither of us have blocked each other's number. There's nothing on my account that would show why I can't receive calls from him. Any ideas?