On the good side at least you are "temporarily restricted" and not permanently banned. If it pertains to this account you have only been on since 5 September. As others mentioned you did not include any information on what you tried to list for sale.
As others also mentioned you are in the U.K and this is mostly a U.S. forum. There are nuances to individual countries with regards to setting up a seller account on eBay and most of us are not familiar with those. You may want to post this question on the U.K, forum. With regards to contacting eBay the call in support is useless at the moment if you are going to try to contact customer support/service do so through the Facebook connection.
