Hi Jacki
Welcome to the forum.
You might want to have a look at the following FAQ which explains where everything is;
www.benefitsandwork.co.uk/guides-for-claimants/faq/forum.
You need to contact HMCTS, I cannot give you a number as it depends on where you live, if you postpone your Tribunal you may have to wait quite a while to be re-listed, did you notify HMCTS when you made your appeal about the minimum length of time needed for an appointment.
Gary
