itunes match log in

I have a couple iTunes accounts and IDs. I had iTunes match set up fine on my phone, but one day all the clouds went away.

To get it back up I went to settings, turning Match off and on, and it asked for my login info. Unfortunately, I entered the wrong ID and it rightfully said I have no iTunes match account and to go to my computer to sign up.

However, I am signed up for Match, but I can not find a way to enter/submit the correct account into the iphone. Everytime I go to setting for iTunes match, it just gives me the same error with no ability to resubmit the correct info. It's like its got this one login locked into ist brain and I cant change it.

How can I fix this?

Thanks.