Itunes locking you out after paying!

I've had a paid subscription to Itunes for years with no issues until now. Just after I paid for my subscription it is now saying my account is locked and I don't have access to it! It has taken me years to build all my music and playlists. This is highly frustrating for something that I'm paying for to not work and now to lose all my music.

There is no contact numbers to resolve and your email requests is just giving me "access denied" please resolve this!