Apple ID FAQs
I deleted an apple I'd ...
Apple IDs cannot be deleted.
... Now I can't access certain apps ...
Anything Downloaded with a Particular Apple ID is tied to that Apple ID and Cannot be Merged or Transferred to a Different Apple ID.
... I can't find where to update my payment info for apps. ...
Changing Account Information
If necessary Contact iTunes Customer Service and request assistance
Use this Link > Apple Support iTunes Store Contact