And if you're not fast on your feet, there is nothing wrong with saying, "I have to think about that. Can I get back to you with an answer" or something along those lines. You don't always have to respond immediately.
I personally think voice conversations are better. Text often leaves insight to interpretation. I can persoally read negative in, "Have a good day" if my mind is in the wrong place.
I wish my W wanted to speak over the phone more. All we do is text for the most part. I hate it!