This is what I was thinking. I'm the type who wants to resolve conflicts as soon as possible, so I'd want a phone call too. But I've also had misunderstandings with T (and marriage counselor) over phone and/or e-mail that might not have happened in person. On the phone, you don't have the facial expressions, body language, or eye contact that are part of communication. So something can seem, say, harsh on the phone that might be different in person. However, if this is what your T is concerned about, he should have told you that instead of just refusing a phone call.