Wrong spotify upgrade

[Rachaelosi]

I upgraded my account to spotify while logged into my normal spotify account that I consistently used bearing in mind I somehow have another account which i am completely inactive on. When I subscribed to premium and pay I see that it updated the inactive account rather than the one I was logged into and use consistently. This is so annoying as I don't want to pay again. What do i do? How can I change this to my normal account?