Unfortunately, due to security reasons we can't manually verify the identity of the users. You'll need to have at least any one of the credentials associated with your account for recover/delete it. Hope this helps clarify.
You'll need to have at least one of your account related information (i.e email / username and any recovery options, if set up). Once you have that here's how you can regain access: https://goo.gl/dYcTmt . Hope this helps.