From Free to Premium in the Android-phone (Samsung Galaxy SIII)

[user-removed]

I bought a brand new Samsung Galaxy SIII two days ago.

I went to Google & searched on how to get Spotify Premium on my monthly subscription/plan.

I sent SPOTIFY to 4433 as I have Halebop as a net-provider.
I then got a link as a reply which I clicked & got to the page where you download the app to the phone.

After I did that I came to reg a user-account to use in order to get Premium.

I chose "I already have an existing account".
Then I typed my username which is Umeaboy & my password for that account.
As I was finished I got a message stating that the username already exists.

My goal is to use my current username from before instead of the account and username I had to make & register in order to get Premium working.

What's the best way to fix that?

I really could use some help.

Thanks.

[licenced]

If you get free Spotify Premium from your net provider you should get in touch with them for information on how to activate it.