Purchases made using an Apple ID are tied to that Apple ID. If you not longer have the Apple ID, then those items will have to be re-purchased. You've spoken with Apple about this, so, if they can't help you, then neither can we. You can try Item 8 below to see if the old Apple ID is still listed.
For Problems With Your Apple ID
- Forgot iCloud Password
- Forgot Apple ID
- iForgot Password - Apple ID
- iForgot UserName - Apple ID
- Apple ID Password Change
- Apple ID Name Change
- Apple ID - Apple Support
- Manage your Apple ID primary, rescue, alternate, and notification email addresses
- About your Apple ID email addresses
- Get help with Apple ID
- Contact Apple for help with Apple ID account security - Apple Support
- What to do after you change your Apple ID email address or password - Apple Support
FYI: These are user-only forums. This is not Apple Support. if you need to contact Apple Support, then contact product and tech support: Contacting Apple for support and service including international calling numbers.
These forums only provide help with Apple products. Thank you for your understanding and support.