My spotify is linked into my facebook so when I log in I use my facebook details.

But during the week I went to deactivate my facebook [moderator edit], little did I know that I still had to log into spotify with my facebook details.

So I had to log back into facebook which reactivated the account which I am not too impressed about.

Anyway I logged into spotify on the website and went to account details and noticed that my username is like a 8 digit random name. Theres no option to change it. I mean like I wish to use the username rather than logging into facebook the whole time when I want facebook deactivated.

Is there an actual way of changing the username?
Mine is just random numbers like how am I going to remember that in the future for logging into spotify ?