Hi Claire
We cannot tell you how long they take as it varies across the regions.
When you appeal the decision you can decide what format you would like, face to face, telephone or video, I usually go for a telephone format rather than a video as less likely for things to go wrong.
At a hearing if you miss anything ask them to repeat themselves or if you do not understand a question tell them you do not understand the question
Gary
Nothing on this board constitutes legal advice - always consult a professional about specific problems 
