I have already contacted WordPress.com itself about this, and I only received some sort of AUTOMATED REPLY from a certain "Ryan M." that was sent to me twice on two different cases:
"The error you have experienced upon registration has occurred because one or more of your blogs is currently under a warning or suspension. Please visit your existing Dashboards and contact us using the link that has been provided there to resolve the problem before you attempt to create a new blog."
How would I even be able to do that, if I already deleted my one and only blog? I tried creating a new blog, seeing that I have none in the settings page, and it resulted in an error on wordpress' part. And I have tried accessing the "Personal Settings" in the dashboard (dashboard.wordpress.com) to change my username, which ended up with the same error. I have reported both instances using their respective resulting error page, and all I get is a response that is blatantly copypasted (please do understand my frustration). Prior to the recent deletion of my blog, I changed my email address to the more active one, which I saw as a harmless move.