Accidently upgraded the wrong account

[larap_p]

Hi. Apperently facebook en spotify login are tzo different accounts. I did not know that so i upgraded my facebook account from free to premium, instead of my account through spotify. This means that my facebook account now says premium, and my spotify account says unlimited. This also means i am paying for two accounts. I dont need my facebook account, i just want spotify account set to premium. Is it possible, how do I upgrade my account with spotify login and delete my facebook account, without paying twice?