your account has been disabled in the app store and itunes

I am trying to update my apps, download new apps, and change my payment information on my IPhone XS, but every time I try, this message poos up: "your account has been disabled in the app store and itunes". Has been like this for about a week now and I need to update my payment information for apple music and it just won’t let me. How do I fix this? Thanks in advance.