"Have you not heard of making your communications accessible?"

I have a dermatology appointment letter in front of me for mid January 2015. It says "If you change your ... GP, please let us know. " How? Do I write to the Appointments Coordinator whose title (but not name) appears at the bottom of the letter. Do I ring someone? Who? I cannot see an appropriate person to contact on the Web site. Can I use email? Apparently not because I can't find an appropriate email address. I have scanned the writing on the back of my letter, although that is grayed out which of course makes it very difficult to read. Why? To what purpose? Have you not heard of making your communications accessible?

In these days of electronic communication and going paperless, do I actually have to write and post a letter? Am I stupid? What am I missing here? No - I don't think it's me. I would suggest that whilst it is a small matter, in my experience it is symptomatic of the disconnect of the service from the user (in terms of communications), and that is a management issue.