How to delete my .wordpress.com website

Hi Guys,

I few months ago is created a website called splurgesolutions.wordpress.com. Nowadays I have splurgesolutions.com running, a second site. This is the one I want to continue using. The .wordpress site I would very much like to delete. Here’s the problem; when I log into splurgesolutions.wordpress.com/wp-admin.php the dashboard display has a an option ‘My Sites’ at the very top corner. When I click on that option it tells me that I have no sites running…. How do I find the .wordpress.com website that I so very much want to be gone… Help!