WooCommerce Update 2.0.3 has failed and has completely deleted my shop page!

Hi there, I have recently tried to update the WooCommerce 2.0.3 on my word press website as the little shopping basket icon completely disappeared so I thought by updating it, it would re appear so that my customers can easily look at what they’ve bought. This is now not the case! I have clicked the update and it completely failed, the plug in has completely vanished from the plug in menu and now every time I attempt to re download it I get a message saying that the download failed as the WooCommerce folder file name already exists on word press. I have also tried manually uploading it onto WordPress and all I get when I attempt this is a static page that says ‘un packing the file’ and it does not progress. Also, because of all of this massive mess the shop page on my website has completely gone and now my customers cannot view/ buy our products which is potentially losing me a lot of money!

Please advise my on this ASAP!!!
http://www.thepreciouspetscompany.co.uk

Gregory Nash

http://wordpress.org/extend/plugins/woocommerce/