I don't do phone calls either - at least with my T, I can sms her.
But I think you may need to bite the bullet and phone if you do not receive a reply via mail. Unfortunately me refusing to speak on the phone has been the main break-down in communication between my existing (Old) Pdoc, and me now having to see someone new.
I realise I may be running round in circles, if this is going to become a habit, and I actually just need to learn to speak on the phone. At the same time, I'm clinging to the hope that I can just speak to my T (Who I feel comfortable with) and she can be a medium between me and pdoc...????