Purchased a 12 month xbox gold live pass but redeemed against wrong microsoft account.

First question so hopefully i can get the answer i'm looking for...

As the title would suggest, i purchased a standard 12 month xbox live gold pass and redeemed it against one of my microsoft accounts. The one in which i should have deemed it against, is the one linked to my fortnite account. As i can't unlink my xbox account
from fortnite and link a different one, I am out of options on what I can do. Is there anyway in which microsoft can transfer a pass from one account to another?

Thanks

:)