Lost all my Minecraft account details, how to fix this?

Ok so i haven't played Minecraft in a VERY long time. I can't recall if it's been years or months, oh well. Anyway i tried logging into my account today called xXPixelHeartXx. Turns out i have no idea what the password is and the e-mail linked to my account is deleted. I don't even remember my Mojang details… I tried making a new one but won't let me login. So what do i do?

Added (1). I remember the e-mail used but it has been deleted so i have no idea how to reset the password

Added (2). Nevermind, i have sent a request to change the e-mail and password as i can prove the account is mine with the purchase code.

Customer Support Helpdesk@+1^800^256^7021

There's nothing you can do apart from buying it again, imagine what they would think if you contacted them saying you only know the username of the account and nothing else.