Uninstall JigoShop

Hello Fellow wordpressers I was having a great deal of trouble trying to set up an e-commerce plugin called jigoshop. So I have tried to uninstall it to try again however after clicking ‘delete all files’ it displays “Fatal error: Class ‘jigoshop’ not found in /homepages/25/d249562270/htdocs/Wordpress/wp-content/plugins/jigoshop/classes/jigoshop_options.class.php on line 546” therefore when I delete it via FTP and reinstall it, it is still as if it were installed before with these problems included. I need major help ASAP if possible preferably with someone who has used this plugin before, MANY THANKS. I am just trying to start from fresh and with this error message this is not possible.