Unfortunately at this time we do not have a way to recover lost accounts. As part of the new features we are currently working on, we are going to be adding an email recovery process so that this does not happen to you or people like you in the future. We will also going to add the ability to link your various social media accounts to one plug.dj account so that even you lose access to your Twitter account (for example), you will still be able to log into plug.dj using your Facebook account, or email, or Google+.
We realize that this can be deeply upsetting to lose out on all the time you spent accumulating music, fans and points, and we are working to resolve this for the future. If there is any way that you can restore access to your Facebook/Twitter/Google account that may be your best option at this time to regain access to your plug.dj account.