Q: Old Apple ID interfering with new one

Content and Apple IDs -

Content is forever tied to the Apple ID that bought it. Apple does not transfer content from one Apple ID to another. Apple does not merge Apple IDs. You will never be able to access your content bought with another Apple ID with a new Apple ID.

Yes, you do. If you're unable to, click here and ask the iTunes Store staff for assistance.

(104309)

You have 2 choices; delete it all and buy it again or recover the old Apple ID. The Account Security Team can help you reset the Apple ID's password.

Apple ID security issues -

Call Apple Care and ask for the Account Security Team.

http://support.apple.com/kb/HT5699

You personally spoke on the phone to a member of the Account Security Team?

Or you contacted iTunes Support at the link posted by Niel and communicated by email?

Or something else?