i created a new account and conneted to facebook and now i cant log ind to my old-facebook account

[trungnguyenxd]

it starts with my spotify was conneted to my facebook (i made it from facebook) the account was kinda bug so i wanted to make a new account  to see if it was bugg aswell so i did and accidentally conneted to my facebook. and now i cant log into my old facebook account.  i want my old account back because it has everything i had for years my playlist (whitch is private) and all my songs i have save i really hope you can get my account back thanks