I can't remember ALL of your numbers

Since Saturday, my mobile phone has been deteriorating like the photo of the McFly children in Back to the Future. So I am either going to have play an incredible version "Johnny B. Goode" for my parents in the 1970s ("Watch me for the changes and try to keep up") or get a new phone. It seems completely inexplicable at this point, but if I don't call you anymore, that's why. Especially if your name begins with any letter after "Rugby Dan."