I registered my wordpress.com blog dropofwhimsy.wordpress.com a few weeks ago, and this morning I upgraded to dropofwhimsy.com from my dashboard. I realised too late that I was on wordpress.com and not wordpress.org. So now, despite having paid hosting for dropofwhimsy.com, and having installed the wordpress software to that domain, I'm still stuck on wordpress.com, which means I can't upload the nice, professional theme that I bought from a third party website.
I'd like to delete my dropofwhimsy.wordpress.com blog, and to get dropofwhimsy.com off of wordpress.com. I know I bought the upgrade from here, but I should be able to take the domain name somewhere else. How can I get back the rights to modify the site I paid for?